Eat that shit
You yell this when your friend or someone you're watching decides to chow down on something that looks like it was vomited up by a raccoon, and sometimes even actual poop. You're happy as hell because they're really eating that goddamn mess.
My cousin tried to eat that mystery meat. I said, 'Eat that shit!'
My buddy ate the last slice of pizza that was covered in mold. I yelled, 'Eat that shit!'
My mom tried to eat my old socks. I told her, 'Eat that shit!'