Swinging her body over to one of Jon's hands in an effort to support herself by something more than just her magnificent bust, Karyn began, "Be careful Jon, shrinking the rest of me seems to have made my breasts unusually sensi--ooooh."
Karyn was let out another involuntary moan as Jon stroked his thumbs past her nipples. Jon could tell from the pictures in the 'special' magazines he kept hidden away along with the box with his grandfather's letter that nipples and aureoles on women's breasts were larger than their male counterparts, but these seemed even larger than he expected. They certainly seemed comically huge compared to the rest of Karyn--the nipples were larger than Karyn's fingers, and you couldn't cover an aureole with Karyn's head if you tried.
Smirking at the thought, Jon quipped, "Awww...did becoming a little girl make your big-girl tits extra sensitive?"
Karyn swung her body again and managed to lock her knees around Jon's left pinky, relieving some of the pressure from hanging by her breasts.
"Tsk, tsk," Jon scolded, "We can't have that. You get to fully experience being tiny, since you thought shrinking me would be so funny." With that, Karyn let our another moan as Jon lightly squeezed Karyn's breasts.
As she moaned, Karyn's grip on Jon's pinky loosened a little. She shouted up to him, "Jon, stop."
"What's that," Jon asked, an innocent look on his face as he began kneading Karyn's breasts in earnest, "You want me to stop squeezing your tits?"
Her leg grip on Jon's pinky getting ever looser, Karyn replied between moans, "Stop...squee-...-zing...my...brea-...brea-...breasts...and...put...me...down..."
With the final moan after 'down', Karyn completely lost her grip. Her body dropped and swung wildly from the two mounds of flesh in Jon's hands. She winced in pain from the effect of having her entire body suddenly swinging from her breasts.