What is it about the penis that allows it to change size and shrink? I dont mean when a guy has an erection and it goes back to normal size, I mean when it shrinks to a really small size due to being cold or something. I am not the most experienced person about sex, however, I saw a guy who has an above average penis size when erect recently naked and his penis shrank really bad. He almost looked liked a girl. Now here is a guy with an 7 1/2" penis looking like he lost it or something, it was almost funny. Is it normal for this to happen to a guy's penis? Also is this what causes his balls to do the same? 7 1/2" hard to 1" soft sounds like alot of shrinkage.
Posts: 41 | Registered: Jun 2000
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The testes need to maintain a certain level of warmth, so that the sperm can survive. As a result, when a man's genitals become too cold, they retract into his body for warmth.
Posts: 2710 | From: Australia | Registered: Jun 2000
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yeah, shrinking is normal. and moreover, the size of a flaccid penis has no bearing on the size of the erect penis (except that the erect penis can't be smaller than the smallest flaccid size of that penis -- that's common sense, though). the penis can shrink so much because the penis is filled with very spongy tissue (called the corpora cavernosa and spongiosa). ever seen a sponge dry up and shrink? the penis does something similar.
as for the balls and keeping them cozy, they're retracted by the cremasteric muscle. That muscle connects the scrotum with the inner crotch-thigh area. the muscle contracts and the testes go *whoop* into hiding. The contraction reflex is called the cremasteric reflex, and it can be triggered by rubbing on the inside of the man's thigh, near his scrotum. The reaction is not sudden, though, you'll see them things just creep along up the leg...it's actually kinda amusing.
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