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.
she only stays with him cause he does the motor boat
by the true motorboater July 10, 2009
v.int. The act of a woman forcing a person's head between the cleavage of her massive bosoms.Causing the face to be smothered and smooshed by her boobs, then she shakes her breasts creating disorientation.
My nose is broken from motorboating Kelly G.
by AsianValentine April 18, 2006