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Thats your prostate filling up with mayonaise.
Guy 1: "Hey man, when I watch you masturbate, I get that warm feeling in the pit of my stomach that I got the first time I kissed someone."

Guy 2: "Dude, that's a kamascus."
by babies are twat shit December 18, 2007
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2
That's when your prostate fills up with mayonnaise.
Guy 1: "Watching you masturbate gives me the same warm feeling in the pit of my stomach that I got the first time I kissed a girl."

Guy 2: "Dude that's just a kamascus."
by babies are twat shit December 20, 2007
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