Card Sleights - False Cut

Imagine that you divide your pack into 3 smaller (try to make it equal) packets. Let's call them from the top to the bottom, X, Y and Z.

Hold the original pack into your left hand and with your right middle finger and thumb bring packet Z into the right hand. Take Z over XY and with your right ring finger and thumb get packet X.

To recap: in your left hand you have the remaining packer Y (the original middle one) and in your right hand you have X on bottom and Z on top (still keep them separated - one is held by middle finger and the other by the ring finger).

Now bring Y on top of Z and grab them in your left hand. This means that in your right hand you will only have packet X that you should put on top of YZ that's in your left hand.

Therefore you will end up again with the original XYZ pack.