Over the rest of the week, Mark and the triplets got into a kind of routine.  Dolly would leave for an early date with today’s latest beefy guy (Where was she finding so many guys with huge chests and biceps? Mark wondered ) and Mark would go upstairs to a session of mad, passionate sex with Barni and Penny.  Even better, as the week progressed , the young women were learning more of what they could do to please him, and he was finding subtle things he could do to return the favor.  Simply giving his cock and extra bounce brought either squeals of joy or gasps and moans of pleasure from the sisters.

There was no question in Mark’s mind that he was falling hard for Barbi.  She loved spending time with him, and they talked for hours when they weren’t having sex, even when Dolly was home.  He liked Penny -- was beginning to, in some sense, love her -- but it wasn’t the same thing at all.

Meanwhile, Mark studied and puzzled over his game-changer before and after his night shifts with the paper.  He was getting close to a solution, and he knew it.

On Monday morning, Mark got to the house.  A large, muscular man was waiting in a convertible out front.  As Mark approached the house, Dolly came bounding out, her breasts jiggling heavily, barely contained in her low-cut blouse.  “Have a good morning, Mark,” she said.  “Something slightly different is on track today.”

“For you, too,” he said.  “When you get home, I need you in on a conversation.”

Dolly looked at Mark, trying to decipher what this was about.  Then she smiled.  “Will do,” she said.  Then she turned to the car.  “Hey, Phil!” she said to the driver.

Mark entered to find Barbi -- just Barbi -- waiting at the top of the stairs.  He climbed up and sat near the top step so his eyes were level with hers when he sat down.

“Hey, gorgeous,” Mark said.  “Where’s your sister?”

Barbi looked nervous.  “She’s, um, … She’s taking the morning off,” the middle sister said.  I told her what I had in mind and why I had it in mind, and she decided, well … to take the morning off.”

“So, what did you have in mind?” Mark asked.

Barbi closed her eyes.  She looked as though she was afraid of what she was about to say, or afraid of the reaction it would bring.  Finally she blurted out, “Mark, I love you.”

Mark put his face right next to her body.  “I know,” he said.

Barbi put her fists on her hips and took a wide stance.  “Who are you, Harrison Ford?” she asked.

Mark chuckled.  “It’s a good thing you love me,” he said, “because I love you, too.”

Barbi took a deep breath.  “You do?”

Mark nodded.  Suddenly each of his cheeks had an arm hugging it.  He realized that Barbi was relaxing as she hugged his face.

Gingerly Mark scooped up the small woman.  She was naked.  He wasn’t.  He took her to Dolly’s room, where the bed was turned down, as usual.  “May I start today?” he asked.

Barbi looked confused.  “What did you have in mind?” she asked.

Mark lied down on the bed, still clothed.  “Sit over my mouth, and I’ll demonstrate,” he said.  Barbi, looking expectant, terrified and excited all at once, did as she was told, one leg over each of Mark’s lips.

Then she almost fell over with pleasure.  Mark’s tongue was gently flicking up, licking her vagina.  Bits of it worked her way further in her at moments.  The move was triggering orgasms in her, and they were just getting started.

After about 20 minutes, Mark gently lifted Barbi, who was limp with ecstasy, and placed her on his chest.  She lied there a few more minutes, then looked up.  “That was astounding!” she said.

“Thanks,” Mark said.  “I enjoyed it, too.  “I could taste when you were lubing up inside.”

“I can believe it,” Barbi said.  “From my perspective, that felt like a flood.  And I could hear that you were enjoying it.”

“Can you help me undress?” Mark asked.  “I’d like to do something else yet.”

“Me, too,” Barbi said.  She walked over and started slipping a button, bigger than her hand, through a buttonhole on Mark’s shirt.  It took a few minutes for her to walk down his chest, but soon the shirt was unbuttoned.

“Sorry that was so slow.” Barbi said.

“I’m not,” Mark said.  “I love having you undress me, and the feeling of you walking down toward … the business district.”

Barbi laughed as she grabbed the zipper of Mark’s pants and pulled with all her might to open it.  “Well, then, let’s get down to business,” she said.

Mark gently lifted her so he could safely remove his pants, then placed her by his fully-erect member.  She started playing a game they’d come to call “Ride ‘Em, Cowgirl,” straddling the dick and making it bounce.

Soon Barbi was spread out with most of her body along Mark’s cock and her face kissing its tip.  Mark stroked her back with two fingers, frequently finding his way to her derriere.

Then Barbi heard and felt the familiar surges starting.  She scrambled awkwardly up to sit atop the tip, holding onto its edges for stability.  She lined her pussy up with the tip and yelled, “Come on, Mark!  Come on!”

Then Mark came.  The force of the initial surge actually lifted Barbi for a moment.  She was filled to overflowing with Mark’s semen, and her insides were dancing far more than ever before.  She collapsed onto Mark’s belly.

Mark chuckled weekly.  “How … can this keep getting better?” he asked.

Barbi laughed.  Mark realized she was in such ecstasy she couldn’t speak.

He stroked her back with his right index finger.  “So, did we answer your question?" He asked.

“Oh … yeah!” Barbi said.

After lying there together for awhile, Mark said, “Barbi, I have an idea for how to help Penny -- and, later, you, but Penny needs to come first.”

Barbi sat up, her interest piqued.  “How would it work?” he said.

“Simple,” Mark said.  “My game-changer is a name-changer.  We legally change her name.”

“We thought of that years ago,” Barbi said.  “But the magic has so many trap doors, we couldn’t think of a safe name.”

“The trick is to think of the whole name,” Mark said.  “But this is something I should explain with Penny here.”

“Let’s go to her room,” Barbi said.

Once they were in Penny’s room and Penny was ready for them, Mark placed a small slip of paper -- as big as a tall ship’s sail to the ¾-inch-tall Penny -- with the proposed new name on it.

“Two middle names?” Penny said.

“That’s not as unusual as you might think,” Mark said. 

“So, if I understand this right, the first name functions as an adjective and makes the second and third names work,” Penny said.  “But isn’t the second name kind of old-fashioned? And couldn’t it be misinterpreted, as, like, a labyrinth?”

“That’s why it ends in a y,” Mark said.  “People know corny; there’s no such word as labyrinthy.  And no other adjective built on labyrinth can plug in.”

Then  Penny giggled.  “You know what that third name will do to me.”

Barbi smiled.  “Why should Dolly have all the fun?” she asked.

“I know one of the judges from a stretch as a reporter,” Mark said.  “ I believe I can get him here to do the name change when I explain that there’s a unique medical condition involved.  This should work, Penny.”

“Then let’s do it,” the tiniest woman said.

“Should we wait for your mom to come home?” Mark asked.

“No,” said the sisters simultaneously.  “Mom wants this done,” Barbi said.  “The best present you can give her for her return home is to hug her great, big, baby girl.”

Mark nodded.  “I’ll call Judge Shaw and make the arrangments,” he said.  “and we can tell Dolly about this when she gets home.”

Judge Roger Shaw stood slack-jawed as he stared at Penny.  “If I weren’t seeing it with my own eyes, I wouldn’t have believed it,” he said.

“You can see why I wouldn’t explain what illness Penny had,” Mark said.  “You’d never have believed me if I did, even though it was the truth.”

“You got that right,” the judge said.  “We’ll need you to sign the papers, Penny.  Can you do that?”

She saluted the judge.  Penny climbed onto and inkpad, then got off and traced a signature with her feet on the paper.

“Very good,” said the judge.  He turned to the court reporter he’d brought with him.  Let the record show that Penny Hoest has now legally changed her name to,” he read from his copy of the document, “Summer Maizey Melanie Hoest.”

Mark smiled.  He hoped this would work.

He next morning, Mark was surprised by a phone call.  “Mark, it’s Summer!” boomed a powerful voice.  “Boy, did your idea work!  Get over here and see the results for yourself!”

Mark arrived to find all three triplets in the living room.  Dolly and Barbi he recognized instantly;  Summer took a moment, and then was mainly because her skin still had a slightly coppery tone.

The Amazon who had been Penny was now an eight-foor-tall giantess.  She was long an lean, like a summer cornstalk, with long hair the color and texture of corn silk.  But she also had two other notable attributes -- breasts as big as fully ripe summer watermelons at the peak of their size and flavor.  She was also stark naked.

“Summer?” Mark said.

“Hi, Mark,” the giantess said. Suddenly she scooped him into a colossal hug, picking him up in the process.  In that instant, with the warmth of her massive mounds pressed against him, Mark was glad he’d thought to include “Melanie” in Summer’s new name.

Once released from the embrace, Mark asked, “Why are you naked?”

“I’ve never worn clothes because I was so tiny,” Summer said.  “And now there’s nothing here that would begin to fit this body.  That’s why I called you here.  I need your help.”

Mark was afraid of what kind of help the giantess would want, especially in light of his feelings for Barbi.  “How can I help?” he asked.

Summer stood up .. and up.  “Measure me,” she said.

“What?” Mark said.

“Measure me,” Summer repeated.  “I need clothes, and my sisters can’t easily reach this high.”  then she leaned down and whispered in Mark’s ear, “and, besides, you were both my first time and the man who gave me a life.  I can see how you and Barbi feel about each other, but don’t deny me one last bit of fun.”  Then  she smiled coyly, eyes locked with his.

Mark chuckled.  “Give me the tape measure,” he said.

The measuring went smoothly, except that Summer kept taking deep breaths to expand her already-prodigious chest when Mark was using the tape.  That made for a challenge, but he eventually got the work done.

Soon, Dolly left with the measurements to see if anything could be found in which to clothe her now-towering baby sister until they could get something tailor-made.  Summer went upstairs to call her mother with the news.  That left Mark alone with Barbi.  “Now, that just leaves you,” he said.

“About that,” Barbi said.  “Mark, the only name change I want won’t change my size.”

“What do you mean?” Mark asked.

“I like who I am, as I am,” Barbi said.  “Is that OK with you?”

“Why wouldn’t it be?”  Mark said.  “That’s part of what I love about you.  You’re comfortable in  your own skin, small as it is.  That’s a rare quality in a woman of any size, and very sexy.”

“Then don’t try to find a new name, or some other gimmick, to make me bigger,” Barbi said.  “Leave me little, and let me love you big-time from here.”

“ No problem,” Mark said.  “But what did you mean about a name ch-- Oh!  Now I get it.”

“Yeah,” Barbi said.  “The only name change I want is where I change my last name to yours.”

Mark smiled a crooked smile.  “I saw all those fashion-doll wedding dresses up there in  your room,” he said.  “do you already know which one you’re going to wear?”

“Going to?”  Barbi asked.

Mark nodded.  Barbi snuggled into his chest., climbing inside his shirt.  He felt her caressing his pecs.  Then she popped her head out.  “As a mattert of fact, I do have the dress picked out,” she said.  “We’ll do the ceremony here, and my mom will carry me down the aisle on a ring-bearer pillow to give me away.  Do you think Judge Shaw would do the ceremony?”

“He’d love it,” Mark said.  “Um… about the honeymoon …”

Barbi’s expression took on a playfully ornery look.  “Yes?” she said.

“I know this little bed and breakfast out in the country where we can get an old summer kitchen all to ourselves,” Mark said.

“A place where I can have you all to myself,” Barbi said.  “I like the way you think.”  Then she dived back into his shirt and started working her way down.

Undoing his belt and pants snap, Mark said, “I like the way you think, too.”