Boat Motor 

Not to be confused with the motor boat. The Boat Motor takes place during the act of cunnilingus. When the vagina becomes sufficiently moist the male makes a buzzing sound with his lips, much in the way you would blow into the mouthpiece of a trumpet. For greatest effect, couple with the Tidal Wave.

Last night i gave my girlfriend the boat motor and she came nine times

Boat Motor by The Mighty Pinecone June 22, 2016

Motor boat across the river 

The act of motor boating boobs that are nonexistent or have a huge canyon in between them.

Dude she wants me to motorboat her boobs.
You mean motor boat across the river, she has no boobs.

Motor boat across the river by eSalazarv1 February 26, 2011

motor boat

to bury ones face in some giant jugs and shake your face back and fourth while blowing out, and making a hubababa sound.

Man look at that rack!
yeah i'd motor boat them jugs all night long!

motor boat by kimbo May 5, 2006

69 Short Stack Motor Boat Rack Attack 

Two women, 69 position, Motorboating each others boobs

69 Short Stack Motor Boat Rack Attack. Two women motorboating each other in the 69 position

69 Short Stack Motor Boat Rack Attack by FDAU01 November 19, 2010

motor boat

The act of sticking your face between a pair of ones breasts and shaking your head violently while making noices that resemble a moter boat.

Hey Jason, I heard you gave that girl a motor boat last night, you motor boatin son of a bitch!!

motor boat by Nathan Moreau April 26, 2006

National Motor Boat Titties Day - April 13 

On April 13 you are aloud to motor boat anyone’s titties

friend: hey you know what day it is
friend 2: hell ya it’s National motor boat titties day - april 13

National Motor Boat Titties Day - April 13 by _Hannah_Baker___ May 25, 2018

Illinois Mega Motor Boat 

While having anal sex with a girl you push her head into the toilet and thrust,she will grasp for breath and make motor boat noises.

Steven Rose: Dude i made Joci do a Illinois mega motor boat last night
Jase Runkel: You must have almost drowned her!

Illinois Mega Motor Boat by Steven Runkel February 14, 2012