Motorboating: when a person sticks there head intbetween a womans cleavage and blows hard creating the sound of a motorboat whilst knocking his head against each boob.

The gravy motorboat is where you cover her chest in gravy and motorboat
Guy 1:Hey rachel how do u fancy a gravy motorboat.

Rachel G T: I would love a gravy motorboat, but only if its oxo chicken stock, i dont want any of that beef flavour
by the zurich ninja 01 August 03, 2011

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