eat dirt - You say 'eat dirt' when someone is giving you a headache. It

You say 'eat dirt' when someone is giving you a headache. It's like whispering 'I'm gonna kill you' in a sweet voice.

My teacher kept talking. I said, 'Eat dirt, or I'll eat your dirt.'

He was annoying me. I said, 'Eat dirt, or I'll come over there and eat dirt with you.'

I was in a mood. I told my friend, 'Eat dirt, and I'll eat dirt with you.'