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A behavior involving

a. 1 male and 1 female
b. 1 male and 1 female

or
c. 1 male and 1 female.

This biological process occurs when a a person of the female sex is sitting on your lap and her boobs are pressed into your face. As you motorboat her boobs, your hands are thrust in a symmetrical fashion, extending from the center of your chest to the outside. This is similar to rowing a boat. As you are rowing the boat, the female is sitting on top of your lap, grinding on your privates.
Friend 1: damn bro did you hear about je'marcus
Friend 2: yeah I heard he broke his hands trying to row the fat chick from apartment 1-a
Friend 1:yeah he was rowing the motorboat
by tahck May 28, 2014
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