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1.
A degree of coldness to which, when confronted with such conditions, makes you stupid.
It is stupid cold out this morning. I didn't even bother wiping the snot dripping from my nose because I didn't want to take my hands out of my coat/pockets. (I looked stupid/retarded)
by Chris A. P. January 31, 2007
 
2.
when it is just too cold and you cant feel your privates
it is just stupid cold tonight! i cant feel my ass!
by ms kitty February 25, 2006