a juggling pattern where 3 balls are juggled such that each hand alternates doing 2 ball columns and the middle ball is swapped back and forth between hands (like a fountain, but the middle ball switches.) the unocupied hand is free to do "Shadow Moves" like whiping your forehead (looks cool after a particularly crazy juggling sequence,) or mirroring one of the other balls. It is also the basis of some very complicated patterns like take-outs, take-ins, and berk's barrage.