A Penis FIlling Prank

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Magi the Mew grinned.  This was going to be the best prank yet.
His girlfriend, Mousey, was currently asleep in bed, wearing her night gown.  The rabbit was snoring away, oblivious to what her boyfriend was planning.  Good.
He went to the end of the bed and took of his pants and underwear, revealing his penis underneath.  He brought it closer to Mousey, and the cock mouth opened up slightly, as if sensing her presence.  Once he was close enough, his girlfriend was sucked inside his member with a /sluuuuuurp/.
Magi moaned as Mousey’s feet were pulled inside.  He loved the way this made his dick expand to fit her, and it would only get wider as she was pulled in the cylindrical tunnel.  Inside, light blue cum swirled around the rabbit’s toes, wetting them.  After pausing to savor the moment, the Mew continued his feast.
Magi pulled in the rabbit’s calves, letting out a small, satisfied cry as she traveled up the length of his cock.  His penis widened to fit as her legs slid inside, and her toes were right next to his balls.  Just one more swallow, and then. . .!
/Slooooorp!/  The Mew sucked up Mousey’s thighs, which stretched out his dick even more than before, and sent his girlfriend’s feet into his ball sac.  Her feet were no longer in the cylindrical tunnel of cum, no: now they were in a large, circular space, one swirling with chunks of semen.  This was right where the rabbit belonged . . . and Magi loved it.  He couldn’t wait for all of her to be in there.
He slurped up his girlfriend’s midsection, sucking in her belly and stopping midway up her body.  At the same time, more of Mousey’s legs were pulled into the ball sac: her calves entered the area with her feet, which stretched out the Mew’s balls and made him let out an aroused sound.  He looked down to see that his sac was twice as big as it was before . . . and it was only going to get even bigger.
/Gllllk!/  Magi pulled in Mousey’s chest, her beautiful breasts going inside of his hungry penis.  More of her was shoved down into his balls: now her thighs had entered, which meant all of her legs were inside the sac.  It stretched out the area even more, expanding and enlarging the space so that she could fit inside.  His balls blew up to four times their usual size—excellent.
The Mew slurped up his girlfriend’s shoulders and neck, pulling them into his dick.  Below, her midsection entered his ball sac, filling up the space even more than before.  His balls were just swelling and swelling thanks to Mousey’s presence, enlarging to fit his prey.  This was great!
Magi sucked Mousey’s neck and head inside of him, and now, all that were left were her arms and hands, which were stretched out in front of her.  Her chest went into his ball sac—the space was absolutely huge now, and Magi’s penis was getting very, /very/ hard.
He sucked in her upper arms, then her forearms.  Once both were inside, her head popped inside of his balls, and joined the rest of her curled up body.  It took everything in the Mew to not orgasm at that moment, and he took a second to pause, let the moment pass.  Then, he resumed.
Magi looked down at the last bite of his meal: Mousey’s hands, which were still sticking out of his hungry cock.  He smiled, and then pulled them inside of his member.
And just like that, it was done.  All of Mousey was inside of Magi, and the rest of her slid down his cock and into his ball sac.
The Mew let out a sigh of contentment as his balls filled up.  They had, by now, expanded to an enormous size, and it felt quite good.  “Mmmm. . . You were delicious,” Magi said, patting his sac with a smile.  “I can’t wait until you wake up. . .”
He didn’t have to wait long.  Mousey was starting to stir inside of her boyfriend’s balls, thanks to all the movement of the feeding.  A moment later, she woke up.
The first thing the rabbit realized was that she was curled up in the fetal position.  The second thing she noticed was that she was surrounded by tight, squeezing walls . . . walls that were covered in a light blue substance that she recognized. . .
Magi felt his girlfriend fidgeting inside of him and grinned.  “I gotcha, babe!” he exclaimed triumphantly.  “You’re in my balls now!”
Mousey smiled.  “I guess you did get me,” she replied, laughing.  “Was I tasty?”
“You’re always tasty, baby,” the Mew replied.
“Thanks.  Love you.”
“Love you too.”