look up any word, like the eiffel tower:
 
15.
laugh
omg thats the biggest cack
by wizardz March 19, 2014
 
16.
A beautiful women you want to have sex with.
That girl with the big knockers is cacks
by magnoliastudent May 04, 2011
 
17.
To inhale from a marijuana cigarette.
"you boys cackin' a doob?"

"We should cack a doobie before we go to taco bell"
by unclemergle32 May 10, 2009
 
18.
a stronger cock, more influential and craved more then normal. A cack is like a god cock, a cock is just a cock. A cack all the ladies want and need, a cock ladies can do without. Only the strong and possessed can attribute such a cack.
kristina: " nick has such a big cock!"
bobbi: " i know, but have you seen mikes cack? its mesmorizing!"
by queen liz November 29, 2010
 
19.
used by teenagers in southern california, mainly in the san gabriel valley.
meaning to have sex.

also used to rate girls based on thier sexiness.
cack=ok looking girl.
ultra cack= pretty girl, nice body
master cack= the hottest girl within a 20-mile radius.
1. yo girl, lemme cack!
2. dude I kicked it with samantha last night, and i caaacked!
3. thats an ultra cack.
4. I'd cack.
by al(s)ex May 29, 2010
 
20.
Something Ashleigh likes to insert into her mouth
Did u see how much Cack ashleigh got last nite
by BigB61 February 12, 2010
 
21.
A noun used in a negative way to describe anything not cared about or unimportant
"What a stupid cack."
"Look at that cack over yonder."
by Baller McJenkins June 08, 2007