What is Mountain Piss?
1.
Mountain Lighting, the knock-off brand of Mountain Dew that tastes like horse piss. Often used in substitute of alcohol when playing beer pong because the effects are almost just as bad and because it's way cheaper.
-Wanna play some pong tonight?
-I'll get the mountain piss.
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1.
A nice, round, juicy, sweet ass. A behind that everyone wants.
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1.
A rather subtle, tasteful substitution for the word vagina.
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