When you fuck so hard you begin to lose feeling in your legs and other extremities.
"dude, last night I got such bad snail legs, I fell down an entire flight of stairs while leaving her apartment."
by Garold Wilson "Gary" Snail Jr. December 10, 2017
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The two legged snail is a sexual act in which the women climbs on top of the mans face while he sexually eats her. The man then forces the women to curl up into a ball while he is still eating her, thus resembling a two legged snail
"Mommy mommy I saw a monster"

"Don't worry honey you're daddy and I were just pretending to be a two legged snail"
by Cloppingpony6969 May 17, 2016
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