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When you're taking a shit and the tip/top of your penis touches the bottom of the seat. If it happens while you're pissing, it can cause a lot of damage because pee will escape through the opening between the seat and the toilet.
John: "How was your shit?"

Craig: "Awful, I got the Mexican kiss of death and pissed all over my pants."
John: "Rough"
by neo2k10 August 24, 2010
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