by Andrea smith November 8, 2006
When a woman happens upon her man having a wank while lying on his back, she disrobes and straddles him in a similar fashion to the reverse cowgirl. However, unlike the sexual position, the woman nestles her man's ball sack between her butt cheeks and proceeds to fart on them as many times as possible, creating a wonderful vibration for him and audibly resembling the engine of a motorboat.
Linda found Jack wanking in their bedroom and offered him a nice reverse motorboat. Jack happily accepted.
by Captain at the Helm April 14, 2009
A variation on the traditional motorboat, in which a friend holds your legs up in the air, like a kegstand, while you have your hands on the girls shoulders and your face in her chest.
by meags8003 July 31, 2011
Greg: "I lick my wife's asshole daily. I drives her insane."
Jimmy: "We used to do that too, until she fated in my mouth."
Greg: "Ahhh... The ole Carribean Motorboat!"
Jimmy: "We used to do that too, until she fated in my mouth."
Greg: "Ahhh... The ole Carribean Motorboat!"
by phafner May 12, 2015
When someone places their lips in the recently used/dirty butt crack of someone else, makes the "Brrrrr" sound of a motorboat, and shakes their head back and forth very quickly.
SEAN pooped himself a work and didn't have any toilet paper so KELLY gave him a Rusty Motorboat to clean him up.
by shifty pipeworks April 25, 2009
When smoking a cigarett, you exhale on a girl's chest, while she is giving you a motor boat! After you're done, you tell her..."Bitch you got a broken motor!"
I was banging this chick last night and she insisted on giving me a motor boat. While she shaked her tits all over my face I exhaled my cigarett smoke all over her tits. She said "Damn hunny...I got a broken motorboat!"
by Lil' Snuffs October 3, 2009
The act of separating a pair of vaginal lips with a boomerang and blowing the inside like a motorboat.
by Jtheslimster March 31, 2015