The act of flipping a cigarette (heater) out of your mouth and catching it back in your mouth whilst having it have spun on the Y-Axis during its flight.
Lamelo: "Yo, Perry, did you see @barstool sports post of that dude burning his mouth because he botched a heater flip?"
Perry: "No, Lamelo, this is seventh grade, I really don't care."
Lamelo: "Oh...I got a boge right here, should I try a heater flip?"
Perry: "I really don't care, sure."
Lamelo: *Attempts heater flip, cig lands in eye, loses left eye*