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The shudder or shiver you have during or immediately after urination.
I just did a piss twitch...sprayed the wall and covered me leg!
by The brothers filth September 05, 2007
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The involuntary spasm or twitch that sometimes occurs when a guy is urinating.
I went to take a piss and my body shook for sec. I had a pisstwitch.
by agathox September 22, 2007
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