Acronym that means "eat shit and die"
It can an also be extended to "eat shit, and then die" ESATD
Or if you mean serious business,
"Eat shit and then die, you dumb asshole." ESATDYDA
At which point it looks like a Mexican celebration phrase in ALL CAPS
Person1: "ur a punk. u haev no lief"
Person2: "Shut the fuck up, I am tired of your bullshit. ESAD"
"ESATDYDA ESATDYDA ESATDYDA ESATDYDA !!!!! AAAIIEE"