This fantastically funny prank can be done at practically any restaurant, or you can do it at home. Your choice.
Step 1: The stuff you need:
1. A container holding that powdery parmesan cheese (found in many restaurants, especially pizza joints).
2. A victim (if that counts as a "thing you need").
Step 2: Plant the prank:
Now just sit back and enjoy your pizza, and wait for the victim to go for the parmesan cheese.
Step 3: The DUMP:
NOTE: If desired, any substance (such as salt, pepper, etc.) may be used as long it's in a container with an unscrewable lid.
Hope you like the prank!