When a man grabs his penis and sticks it through the crack between a woman's boobs as if he were doing the real thing.
by omgtits July 17, 2009
by Fat Ghandi December 28, 2011
Placing your mouth in between the butt cheeks and viciously and aggressively shaking your head back and forth while making the sounds of an out board motor (comparable to motorboating tits).
by JGutt February 27, 2015
A practice of shaking your mouth back and forth over the lucky birthday girl's (or boy's) breasts, an equivalent amount of times to their age.
Darn, it took forever to finish Barb' birthday motorboating because she is now 88 years old. My lips are numb.
by ClavicleLover;) July 4, 2010
Phone conversation:
Ring, Ring
Sam: "Hello"
Erin: "Hey buddy, how are you?"
Sam: "Good, what up?"
Erin: "Dude, put your phone on Karen's tits and rub it back and forth."
Sam: "Dude, what's wrong with you?...but ok"
Erin: "Haaaa"
Sam: "Dude are you really cellular motorboating my girlfriend?"
Ring, Ring
Sam: "Hello"
Erin: "Hey buddy, how are you?"
Sam: "Good, what up?"
Erin: "Dude, put your phone on Karen's tits and rub it back and forth."
Sam: "Dude, what's wrong with you?...but ok"
Erin: "Haaaa"
Sam: "Dude are you really cellular motorboating my girlfriend?"
by Hampton's Finest 2 August 17, 2012
When a female sits astride a male and uses both hands to make clock-wise rotating movements on his man-boobs. Often in an effort to wake him up.
"What is she doing to that poor guy who is trying to sleep?!" "Oh she's just male motorboating him, he's late."
by guru123 January 24, 2012
Sticking your face between a ladys lower fun bags while menstrating and blowing hard allowing the cameltoes to wobble on your cheeks.
by Jitters73 February 6, 2017