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The peice of skin just before your asshole, below your tail bone
"Did you see the size of her blevis"
by Slashybabe October 03, 2006
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To puke.
Iris: OMG...don't look now, here comes that dude.

Synthia: He makes me want to blevis all over my shoes.
by classikjane March 17, 2011
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