flag cracker 

an immense person, extremely fat, person of enormous size, obese

she's a flag cracker, watch out that flag cracker will swallow you whole

flag cracker by Ofan December 15, 2008

flapcrackers 

Any dried secretion about the female genitalia.

"She had a minge like Uncle Albert's beard after a pie-eating contest; I've never seen so many flapcrackers..."

flapcrackers by xine, wielder of the magic hat February 26, 2007

Flapcracker 

To crack ones flaps

Once riding on a horse, my flaps cracked uncontrollably 'I've just had a flapcracker'

Flapcracker by Dungtrumpet March 11, 2017