eat my left
Eat my left is like telling someone to take a bite of your left nut and then go cry in a corner. You’re saying they’re too weak to argue back.
He said I was a loser. I told him to eat my left.
When I beat her in a race, she said, 'Eat my left!' and I laughed.
She said my jokes were bad. I told her to eat my left and she left.