Top definition
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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2
To obtain or gain an erection
Aussie phrase
"He was so drunk he couldn't even Crack a fat"
by Sarah Kayness November 04, 2004
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3
dont crack a fat over her cuz she will look like her mother in 10 years
by beccabee charmer May 08, 2008
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4
jak couldn't crack a fat! how embarassing
by shitface1234567890 April 16, 2011
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5
what happens to me when your mother enters the room
damn i'm gonna need a cold shower after this!
by Col Crass in the ass April 08, 2005
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