Nude art class

You walked into the back room to prepare to change into a robe. You had a nice body and more importantly a nice 5 inch cock, that grew to 7 inches when hard. You were proud of it but not being a pervert you struggled to find any exposure for it. Not that you wanted to walk around naked but maybe if the girls of your school knew you were hung they would not avoid you as much.

You start to strip but you can feel your nerve building up already. If you were a woman this would had not been an issue but now stood in just your boxers you could feel the nerves shriveling your junk a bit. You push down your boxers to see the damage... Your cocks soft but 3 inches, that's some major shrinkage but at least your down to the average...besides it's just nerves so once you get used to thinks your penis should grow to its normal size right? let everyone see your hung?

You can't tell if your imaginating it because of how nervous you are getting but you start feeling a chill on your mini Jack and before you can pull on your robe you feel your balls tighten. instead of big orbs hanging low they are trying to hide deep inside you and your once 5 inch soft cock to your horror is now little more then a 1 and a half inch nub. You have never had such shrinkage before...then again you have never had to strip down in a class of 30 before...the thought of it all plus the cold didn't seem to helping your size...you looked like you had a Micropenis even though it could not be further from the truth...

"Mr. Smith" you hear your teacher call... It's too late to back out. You hope with all your might you will grow once you get used to the room, even if it's embarrassing to begin with you can't stay that small for an hour right?