blump slap as in blumpkin(when u get a blowjob while taking a crap), is when u wipe ur ass and slap the person giving you a blumpkin(the blumpkee) in the face, and make sure to hit em w/ some chunks
She was doin it all wrong so i gave her a blump slap, and that got her workin.
by jnizzlexXx April 17, 2008
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