A reply generally given by bentnose boys to the law-abiding consumer to convince them goods are legit. Now often used sarcastically to refer to stolen goods.
Lula Mae: This TV is very affordable. It's not stolen is it?
Vinny the Mafioso: Nah, it fell off the back of a truck
A phrase used on Twitter typically as a way to mock somebody for either a bad take or no reason at all. Sometimes it's used as a way to ratio the unaware victim. Most people using this phrase lack a strong male role model in their life and don't know what grass feels like.
Person A: Uncle Iroh isn't that great of a character.
Person B: you fell off + YB better
Person A: .