Speedboat 

The sound one makes by placing his or her face in cleavage and shaking their face back and forth while exhaling creating a "brrrrrrp rrrrp rrrrp rrrrp" sound.

The hummer she gave me was so good, I gave her a speedboat as my way of saying thanks.

Speedboat by Michael October 21, 2005

SpeedBoat 

Probably the coolest of the boats. Very fast and often used for racing. Also the nickname for Elizabeth SpeedBoat. Elizabeth SpeedBoat from Aspen Colorado/Los Angeles California is an artist, and the most expert of expert enterprenuers.

You want to wakeboard behind my speedboat? Hey SpeedBoat, you wanna hit this bong?

SpeedBoat by errizarif April 20, 2009

Speedboat 

The action of eating a girl out underwater making a ton of bubbles

He Jeff how did your girlfriend react after you speedboated her ?
She loved it she squirted after I was finished

Speedboat by OGMUDBONE69 February 27, 2015

Speedboat 

Drug slang

I was doing a speedboat

Speedboat by Dirt09 January 29, 2022

Sebago Speedboat 

n, v. The act when one man buries his face in between another man's buttocks and vigorously throws his head back and forth while resonating his lips to make a "brrrrr" sound. Very similar to motorboating.

I almost passed out with delight when Henry knelt behind me, buried his face between my naked ass cheeks, and gave me a Sebago Speedboat.

Sebago Speedboat by GBart444 July 8, 2011

Mexican Speedboat 

A car so filled with Mexicans that the rear of the car hangs low to the ground giving it the impression of a speedboat speeding across the water.

"Hey did you see that Mexican Speedboat? I think the muffler was sparking."

Mexican Speedboat by Paddy O'Toole October 10, 2011

Cleveland Speedboat 

Like the 'Cleveland steamer' you take a dump on your girls chest- then you 'motorboat' her

Barry took a big dump on his girlfriends chest, then he performed a motorboat, resulting in a Cleveland Speedboat

Cleveland Speedboat by matty onearly August 25, 2010