When someone is sleeping you spread your butt cheeks and stick their nose in your asshole and fart, then slap their face with your cheeks
i gave andrew mitchell a big montana last night
by Michael Wahl March 5, 2005
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A donkey punch-tobogan, followed by a combination Cleveland steamer/Dutch oven.
"No way! An actual Big Montana?"
"You bet your ass dude! It was everything I've ever dreamed of!"
by Fattyhawk July 8, 2006
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A sloppy, unattractive,unmanicured vagina. Maybe some Arby's or Horsey sauce could make it more appealing.
Hey, what are you having for lunch?
The Arby's Big Montana!

Damn, that snatch looks just like the Big Montana from Arby's.
by matthew dewbre December 30, 2004
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