Environmental Roast

Alright, listen up, you absolute waste of space. You think you're funny, huh? You're not, which is why you need me to explain simple stuff. The joke here is that the person is saying they would insult you badly, but they're also saying you're basically trash, so they won't. Because even trash deserves to be not burned. Get it? No? Okay, well, don't worry your little head about it.