EAT DIE!
A brutal insult that means you want the person to eat the worst possible thing and then die. It's like the ultimate punishment for being a total pain.
My friend shouted 'EAT DIE!' when I told everyone he had a crush on a goat.
My cousin yelled 'EAT DIE!' when I ate his favorite cookie.
My brother said 'EAT DIE!' when I told his crush he was ugly.