stitch that 

Exclamation by a Jock Scotsman while he head butts someone.

Jock shouted "stitch that Jimmy!" as he nutted him.

stitch that by F A B Scott August 1, 2007

That’s Light Switch 

Means to say duh to someone when they finally got something correct or they understood something.

Quincy: I heard you and your girl broke up

Jamal: Bruh yea I cut that hoe off like a light switch you just now knowing now that’s light switch

That’s Light Switch by Handsome Little Liars April 2, 2019