While sitting in a bathtub or shower filled with 2-3 inches of water, let rip a huge fart and you create a. Jet Ski. If your fart is big enough you can create a rooster tail.
by Dingledangler November 16, 2007
To bury one's face in the breasts of a woman with A cups while making a raspberry. Basically, an attempt to motor boat on a woman breasts that aren't at the size necessary to motor boat.
Charlie smiled as he quickly shoved his face into Diana's breasts and made a motor boat sound shaking his head. Unfortunately, Diana lack the proper equipment and he was left with a jet ski.
by TopGunOriginal9 June 26, 2011
Similar to the motorboat....it is where a guy and a girl face eather other then she sits down on the ground in front of him. Next, as he stands over her, she proceeds to "motorboat" his boner and balls with her face.
Jean really liked riding Charles's jet ski on the lake.
by Blue_Thunder October 17, 2007