I game or a prank younger people play which involves knocking on someones door and leaving before they answer
you wanna go bobby knocking later?

yeah sure
by Ian Handley September 15, 2006
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The act of repeatedly slapping one's member against the face of one's partner during foreplay.
I was Bobby Knocking my girlfriend last night, which turned her on immensely
by Barry_2007 August 25, 2007
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The act of repeatedly slapping one's member against the forehead or face of one's partner during foreplay.
I was Bobby knocking my girlfriend last night which turned her on immensely.
by Barrington_2007 August 20, 2007
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