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3.
Fancy and Rich, at the same time!
As I sat there, in english class, I thought, "Man, Gina Ho's new shoes are so fanch!"
by Ilienne Schachter January 19, 2005
 
1.
an action used on ones pants.

to hit someone in the crotch area or to hit yourself in the crotch area while wearing pants.
"Where did Stephen go tonight?"
"He's at home fanching his pants"
by James John August 27, 2006
 
2.
Normally used towards people who act like jerks; The vulgarity level of the term is equal to that of "fuck."
You stupid fanch! You just ruined my new shoes!
by Johnissoevil March 22, 2004