Michael: Did you hear what John did last night?
Buck: Yeah, I heard he was motor-boating that hot piece of ass.
Michael: Yeah, sick she was UGLY.
Buck: But it wasn't down there, it was up top.
Buck: Yeah, I heard he was motor-boating that hot piece of ass.
Michael: Yeah, sick she was UGLY.
Buck: But it wasn't down there, it was up top.
by Rora Marie January 2, 2008

This is when you place you face straight into a females cleavage/breast and do a lip trill making the sound of a motor boat and shaking your head from side to side.
It usually tickles.
It usually tickles.
"Motor Boat me baby!"
Charlie smiled as he quickly shoved his face into the big breast and made a motor boat sound shaking his head.
Charlie smiled as he quickly shoved his face into the big breast and made a motor boat sound shaking his head.
by NikkehBabeh February 10, 2010

by Jeffer,Lesis,Owlie,Beanna,Ice June 20, 2010

The motor boat is done on a girl's clitoris,(putting your lips together and blowing air through them) making a motor boat soundlike a raspberry or zerbert. a lot more fun than in between the tits for both people.
by the true motorboater July 12, 2009

Nothing like a good motor boat, just be prepared to clean up the water on the floor as the wake can created a bit of a mess.
by copyright2011 December 17, 2010

by Mickey Mouse's Club September 3, 2009

With a girl (or guy) standing in front of you and you both face the same direction, she (he) reach behind them and jerk you off, like they are driving a motor boat.
by Dan317 November 10, 2006
