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2.
To puke.
Iris: OMG...don't look now, here comes that dude.

Synthia: He makes me want to blevis all over my shoes.
by boomboompau March 17, 2011
 
1.
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