When a female goes without washing her crotch for a period of time and a white, smelly substance begins to form between the folds of her cooter. This substance, after extremely long periods of time, begins to attract gnats to said area.
The class hos had extremely bad gnat bread and everyone started to avoid them.
by purplepeopleeater August 18, 2007
When a guy goes without washing his uncircumsized penis and a white, smelly substance begins to form between the folds of his foreskin.
Cindy's Mother: before engaging in sexual intercourse with a guy who has an uncircumcised penis, make sure he thoroughly washes hisnaughty bits. If he doesn't he'll have an accumulation of gnat bread. This could give you a vaginal infection.

Cindy: thanks mom!

Cindy's Mother: don't forget to use a condom, dear.
by Mickey05 April 18, 2009
Smegma.
"I ain't suckin no dick covered in gnat bread! Go home and wash you prick!"
by Tom Thamuz September 01, 2003

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