"Whoa! Karyn. Talk about a dirty mind." Teased Jon.
"What can I say? My mind just wandered and the next thing I knew I was looking at your crotch..." Karyn pulled on the brim of her shorts and peeked inside. "Eh, I've seen bigger."
"Hey! low blow"
"Jeez Jon, I was just kidding. It actually looks kinda cute. And anyway, it's not like I was really expecting you to have a giant cock like they advertise in those spam emails."
Jon blushed a little. His mind focused on the fact that Karyn had called his penis "cute". Being a guy of course he took that as an insult. Though he'd never admit it, he always wanted to think that his penis was slightly on the larger side and secretly took private pride in that. Having it called "cute" though, made him think Karyn saw it as tiny. And of course since he was thinking this way... His actual penis shrunk down to an extremely pathetic size. He gasped and looked down his own pants.
Karyn on the other hand, though she had meant it as an off hand comment, just couldn't get the idea of a giant penis out of her mind. Maybe it was because she had never actually seen a penis in person before, or maybe it was because she now had one, but whatever the reason, she could now see her new bulge growing larger and larger. Her panties swiftly changed into Boxers and her shorts grew larger and baggier to accommodate.
