Caribbean Motorboat 

When someone is locking your asshole during foreplay, and you fart in their mouth

I was going down on Dana, but stopped after a Caribbean motorboat

Caribbean Motorboat by Pavlov's Dong March 21, 2015

Caribbean motorboat 

Licking your partner's butthole, and then they fart.

I was licking my girlfriend's butthole for foreplay until she farted, turning it into a Caribbean motorboat.

Caribbean motorboat by lk05321 March 22, 2015

carribean motorboat 

When, during the course of a rimjob, the recieving party farts.

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!"

carribean motorboat by phafner May 13, 2015