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When a penis is inside a vagina or ass and the vagina or ass farts or queef's.
I was motor-boating your mom's tits. Then while fucking her she queefed and was speed boating my dick.
by rusty trombone of destiny October 30, 2010
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2
When you motor boat two girls tits at the same time at high speed.
"Dude, I was totally Speed-Boating Jess and Steph at that party last night."
by PsychoFazza March 01, 2017
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3
When you grab a girls breasts, put your face in them and go 'BRRRRRRRRRRRRR' while shaking your head from side to side.
I feel like Speed Boating her.
by MLTZER September 22, 2009
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