Top Definition
This begins with the lady furiously masturbating her gentleman's penis. At the moment of ejaculation he performs a motorboat maneuver between his good lady's breasts (pushing the breasts together whilst shaking his face between them and slobbering), thus replicating pull starting a johnson outboard on a motorboat.
She had a rack to die for, so I bought her a drink and she gave me a Johnson outboard in the toilets.
by the_bosshog February 28, 2011

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