The act of putting one's face between a voluptuous pair of breasts while making a vibrating noise with one's lips and shaking one's head back and forth between breasts, simulating the sound a motorized boat would make upon water.
by J No.5 August 18, 2010
by ale x January 16, 2006
by Bb dre November 19, 2019
by Ackack August 10, 2019
While performing oral sex on a girl, flap your lips together on her clit, thus imitating the sound of a motorboat. She'll love you forever.
by istef July 11, 2008
When you go up to a girl and stick your head in there tits and go burrrrrr, than move your head side to side
Kid: hey mom can I motorboat you
Mom:go talk to your sister
Bro1: yo last night I went to my girlfriend's house and she let me motorboat her
Mom:go talk to your sister
Bro1: yo last night I went to my girlfriend's house and she let me motorboat her
by Take a sip of the drink September 29, 2019
by Lil downy August 02, 2019