Not to be confused with Prop Flying.
Prop hopping is a technique in Amnesia: The Dark Descent and Amnesia: Justine which allows the player to continuously jump in the air with a lift-able object. [More info needed.]
Slippery Physics makes this tremendously easier.
- Stand on top of a lift-able object.
- Grab the object during the ascend.
- Release the object.
- Repeat steps 2-4 for potential infinite jumps.