a strange shady like presumption, plan, or scheme. Most likely a hustle in a mischievious and dishonest manner.
A. Wanna place a sketch bet tonight? I heard Ol' girl got the bomb, and I know a couple of people lookin'.
B. Meeting my dude in Piggly Wiggly parking lot at 3:00 a.m. was a total sketch bet. Pleated corners, and a twist tie.......what a joke.