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1.
-noun
1. unusual sensation occurring during the act of urination, characterized by the physical shiver of the back muscles, typically following periods of high physical activity.

1. Bro, I came in from the track today and went to the bathroom. I was standing at the urinal, peeing- and got piss chill- you ever get that?
by Ambrosio November 12, 2007
 
2.
The sudden and short chilling feeling that you often get when you are peeing.
Dude when I was in the bathroom i got one of the biggest piss chills ever.
by qwert333 January 08, 2011