Up and down
up and down
Sliding up and down
Smooth up and down
Up And Down
Flexing up and down
Bouncing Up And Down
Up and down
Bouncin up and down
Up and Down
Up And Down
Up Down, Up Down
Up Down, Up Down, Up Down....
Up and down, up and down!
up and down
Up and down
Up, down, up, down...
Up-and-down