If you're talking about little boys, it's probably a Foreskin you're seeing. If you're talking about grown ups, it's either because they're getting old and that happens to old men, or maybe it's Leprosy, a germ which causes things like penises, ears, fingers etc. to shrivel up and even fall off! You should ask that boy's parents about Leprosy, make sure they didn't give it to him!
your penis shrivels or gets soft because there is no blood flow going through it
because you have a small penis
Gangrene.
To be so scared of the creatures called pokemon that when you see them you will soil your pants and your penis and/or breasts will shrivel.
They get tired and without proper oxygen their penis will shrivel up and die.
Because if you don't, your penis will shrivel and fall off into another dimension entirely populated by dogs who will eat it
Someday his skin is going to shrivel.
Yes this is normal enough. The size when flaccid varies a lot and has not connection to the size when erect. Your real penis size is when your penis is erect. Read about "Penis Size" in Related Questions below.
dropping air pressure
There is no need to remove them, they just shrivel during cooking.
what else would shrivel bieng left out in the sun
of Shrivel
expand
shrivel