Corrected entry: The 3 coloured balls Bender and Kissinger are talking to move position several times - instantly, particularly the purple and blue ones on the outside.
Corrected entry: The parachute Fry opens just before he hits the ground disappears when he starts riding the ball away.
Correction: Just prior to riding the ball, Fry is covered by about 9-12 balls. In that time, he could have cut the parachute lines.
Correction: Watch the scene. They are floating about aimlessly all the time. Of course they change places.