1) someone who is being a shady motherfucker
2) a person who is extremely flaky and unreliable
1)Erika and Taylor are such sketch bitches, we only ever see them when they're blacked out.

2)I called Kelly and she took 4 hours to respond - with a text message. Sketch bitch!
by FitBitchez November 29, 2010
Get the sketch bitch mug.