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2.
When smoking a cigarett, you exhale on a girl's chest, while she is giving you a motor boat! After you're done, you tell her..."Bitch you got a broken motor!"
I was banging this chick last night and she insisted on giving me a motor boat. While she shaked her tits all over my face I exhaled my cigarett smoke all over her tits. She said "Damn hunny...I got a broken motorboat!"
by Lil' Snuffs October 02, 2009
 
1.
The act of inhaling smoke and proceeding to motorboat breasts while exhaling.
He motor boated her last night with smoke like a broken motorboat
by Dr. Krieger June 05, 2013