A young man was raised by a terribly over-protective mother.
From early in life she instilled in him the following:
"Never have sex with a woman because they have teeth
down there and your
thing will be bitten off!"
Finally after years of hearing this our lad heads off to college and meets the girl of his dreams. Things progress until one night she tells him shes ready to go all the way. He explains that he can't and relates what his mother had told him.
"Teeth?" she laughs. "Here, I'll turn on the light and you can check for yourself." He gives her a thorough inspection and finds no teeth.
"You can plainly see there are no teeth
down there." she coos.
He says, "Of course there aren't, considering the condition of your gums!"
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