an random insult used to call someone an ass, but to make it sound slightly different.
suck my balls, assboat.
by =Dean-o= July 26, 2006
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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 4, 2010
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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 30, 2013
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