Avatar flipping is when you combine 3 hits of acid with 3.5g of mushrooms. And fully surrender to the world around you.
Chewy: Hey bro why has Jason been acting like a shaman all day?
Tim: He was Avatar flipping last night and saw the flower of life.
Chewy: So the padawan finally gets it?
Tim: We shall see.
Jason: Tim!!!! (Give giant hug) you wont believe what happened.