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When you think you are done with on the toilet, but you stand up and realize you have not finished peeing. Pee then gets all over your underwear...a pee-tastrophy!
Fredy: Are you done yet?
Sarah: Yes, just pulling up my pants. Wait, oh crap, I just had a pee-tastrophy! I peed in my pants!! Now I need to change clothes!
by ndrew52 October 12, 2011
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