REALLY Cold. So cold that even Liz's butt is cold.
Me: Dang, it's cold. How cold is it, Liz?
Liz: It's butt-cold
by adawg November 5, 2003
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when your butt catches a cold, it sneezes and sniffles alot and maybe itches, and leaks and makes alot of mucous.
i caught a nasty butt cold. it may have been from those spicy nachos...
by buttcold December 31, 2013
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Usually, your mom's fingers and feet get cold first and her butt, because it's so damn big, is the last thing to get cold. So if her butt is cold then everthing else is too, which means it can't get much colder.
A: It's butt cold today.

B: Yes, but your butt is smokin' hot.
by pejohnson76 March 16, 2010
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The temperature of your butt after sitting down on a cold toilet seat.
Jerome: Why are you taking that blanket with you to the bathroom?
T-Raw: I don't want to get butt-cold!
by lolgamergirl69 October 14, 2012
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The coldest of cold. Colder than butt ass freezing.When you walk outside and you want to cry from the wind and cold temperatures.
Do I have to walk the dog? It's butt ass cold out there.
by Zildjian01 June 22, 2006
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When it's obscenely cold outside.

Colder than "Friggin Cold" but not quite as cold as "Balls Frozen To Inner Thigh Cold".
I walked outside this morning to go to class and it was butt-ass cold outside! I feel bad for the local *urban outdoorsmen.

*Homeless population.
by UNC_UNC_UNC February 1, 2011
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When you are outdoors and it is incredibly cold out.
DAMN! its butt-ass cold out!
by boshk March 9, 2005
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