Top Definition
When you fart and it sounds like your butthole is motorboating your ass cheeks.
Damn Hardy!did you just assboat all over yourself?quit assboating!
by hardymetal August 04, 2010
When someone sticks their face in between your ass cheeks as you make a vigorous, vibrating "brrr" sound with their lips.
Mike saw a naked Tim lean over to pick something up and launched a sexy surprise assboating attack.

Ken ended up accidentally assboating his girlfriend when they were picking up their clothing off the floor after sex.
by MissLynx July 29, 2013
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