Top Definition
A build up of semen in a gay man's asshole. Usually slurpped out by his partner.
Billy likes to let his buttnog ferment in his partners asshole before he slurps out the wholesome goodness.
by Nick_C August 01, 2005
A lousy concoction with rum and irish cream with milk and eggs. normally doesnt come out too well. makes one sick
>dude did you try the buttnog?
<yeah i booted all night
by k-dubs December 20, 2006
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