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
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
Chugging huge amounts of cock.
Guy Lombardo was not just a orchestra leader, he was into speedboating as well.
by Flava Jay December 13, 2006

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