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Combination of "fat" and "bitch", then translated into Spanish, hence the A at the end of the word itself. Often used by Gringo's and or Hipsters as a slang term for teasing women.
Pinche Fatcha stop eating all the thanksgiving leftovers and save some for me!
by 24houradam October 01, 2009
Fatcha is another name for a poncing cunt, who constantly begs for draw.

"It's Fatcha, he's a cunt.
by Grey^No Aim August 29, 2006