To obtain or gain an erection
Aussie phrase
"He was so drunk he couldn't even Crack a fat"
by Sarah Kayness November 5, 2004
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Phrase, to "crack a fat", to get an erection.

Possibly related to the British phrase to "crack one off", to masturbate successfully.

"Crack a fat" is commonly used in Australia.
The teacher wanted me to solve the equation on the blackboard, but I'd cracked a fat (being 15 and all) and was afraid to stand up.
by Frantic November 25, 2003
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to have an erection.
guy 1: dude, I think it cracks a fat
guy 2: whats that?
guy 1: Get a hard on
guy 2: Nice.
by Choot&Lund April 18, 2006
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Being repulsively smelly and having the scent of a uncleaned cheesy butt crack
Jake: Wow Kylie smells like booty crack fat
Sharkisha: Yeah she left a trail down the hallway!
by Yugomex April 29, 2016
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The extra skin that shows above the pant line when a female wears pants that are too tight.
Eww, look at that chick, She has pre crack back ass fat.
by SlickSista August 6, 2006
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cracking a fat is an australian slang for 'getting' a boner usealy unententualy can also be 'cracking a fatty' or 'craxking a fatty' 'cracking a fat'
friend: okay lemme just adjust your pants

friend two: allright mate not my fault if i crack a fat
by big man my man May 13, 2023
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