eat their shit
A short and sweet insult you say to someone who is annoying you. It’s like telling them to shut up and go eat their own poop.
My brother was being a pain. I said, ‘Eat your shit.’ He didn’t even care.
My neighbor would talk to me every day. I said, ‘Eat your own shit.’ He stopped.
My friend made fun of me. I said, ‘Eat your shit.’ He laughed.