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63.
Similar to a cock, but just much bigger and more sexually gratifying to a woman. Usually said with emphasis and authority.
Me: Hey biatch, you want some of this cack?
Girl: *Gasp* Oh my God, yes I would.

OR

Look at the size of that cack!
by Renzo Cervantes July 23, 2006
 
1.
"Cock" with a Boston accent. Popularized by Matt Damon in the movie Good Will Hunting. Not to be confused with a male chicken.
Someone with the clap might say, "Ahhh!!! My cack is on fire!!!!"
by Bungalow Bill May 23, 2001
 
2.
Yet one of the many alternative words British people have for shit.
"I was so scared I nearly did a cack in my pants."

"That film was total cack."
by PRAEst76 February 10, 2005
 
3.
Cack = Shit
Hahahaha! Jason just cacked his pants!
by one eyed milkman April 27, 2004
 
4.
marijuana of low or questionable quality usually containing a high ratio of seeds and brownish in color.
This fuckin cack weed is givin me a headache!
I hope you didn't pay much for this cack!
All he's got for sale is nasty cack weed.
by MustangGT July 04, 2005
 
5.
Cack means shit in Lancashire. It comes from the Flemish kakken=to shit. Centuries ago, Flemish weavers were imported to Lancashire.
I'm Popeye the sailor man
I live in a caravan.
There's a hole in my back where I do my cack
I'm Popeye the sailor man.
by Pete Fowler November 09, 2005
 
7.
n. - Cock with an "a" instead of an "o."
1. She was suckin' on my cack all night. And it was nice.
2. Don't be such a cack, man.
by Hemang May 21, 2008