crack a fat

crack a fat

vulgar slang To have or get an erection of the penis. Primarily heard in Australia. Many pubescent boys are teased for involuntarily "cracking a fat" in public as their bodies change in unfamiliar and sometimes uncomfortable ways.
See also: crack, fat
Farlex Dictionary of Idioms.
See also:
  • get it up
  • get up
  • whiskey
  • whisky
  • make a mountain
  • pecker slap
  • meat
  • choad