1 definition by butty fucker

when you stick a penis (or dildo) up someones ass for your sexual pleasure. this happens a lot with queers. but a man could stick his weiner in a womens ass or a women could stick a dildo up another mans ass. there are endless possibilities
me and your wife were butt fucking last night and thats why theres a white spot in her ass.
by butty fucker December 14, 2009
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