Belt Flip
From Acrobalance
This is a two person movement where you can perform continuous backflips.
Name
Sometimes this movement is known as Put Your Face In Your Friend's Crotch, Pull Their Pants Down And Flip Over. This name was first used as early as 2000 at the UMass Juggling Club.
Aka Butt-licker
Method
You can get into position for this movement by having the first person do a handstand and then having the second grab their waist while facing them. Have each person reach through the legs of the other and grab the back of their pants. Then have upright person do a backbend until the feet of the handstander are touching the ground. Repeat!
Hint: Works best when you're both wearing belts and are of matched heights.
Examples
Belt Flip