This is one that can be performed by employees and customers alike:

For this prank, you will need at least two salt shakers, a pepper shaker, and a paper napkin. The shakers have to be the type with screw-on lids, and it helps the prank if the shakers are almost full to the top.

Unscrew the lids off all the salt and pepper shakers. Next, take the napkin and tear off two small squares, roughly twice the diameter of the openings on the aforementioned shakers.

Place one of the napkin squares over the first salt shaker’s opening, poking it down a bit with your finger (forming a bit of a reservoir). Be careful not to poke down past the threaded part of the shaker’s neck-the reason for this is explained at the end. Then, pour pepper into the hollow of the napkin and replace the lid. Finally, carefully screw the lid back on and rip off any excess napkin sticking out from beneath the shaker’s lid (so that it looks untouched).

Repeat the process with the pepper shaker, except this time pour salt into the napkin’s hollow before replacing the lid.

When the next person goes to use the shakers, salt will pour out of the pepper shaker, and vice versa. The unsuspecting mark won’t see the napkin inside because it will be hidden by the bottom portion of the screw-on lid.

Most people haven’t encountered this one, and may think they are losing their grip on reality. The only unfortunate part of this prank is that, if you are a customer and not an employee, you probably won’t get to see the results of your work. However, this is a small price to pay for the smiting of random strangers.

One of my favorite practical jokes when I worked at Blockbuster is one of the easiest to perpetrate. It is also one of the funniest, because (at least at Blockbuster) employees are trained to be totally nonconfrontational.

Take one of the “security stickers” from a new or used video, and use your ninja skills to place it upon the person of one of the other customers. The best places are in a coat pocket, or a bag, but due to their stickiness it is also quite easy to place one in a person’s hair or on their back.

Sit back and watch the show as they repeatedly set off the alarms on their way out of the video store, and see their reaction and the way the store clerks handle the “situation.” In the Blockbuster ‘Loss Prevention’ training video, employees are instructed to ask things like, “May I check your purchases out at the counter?” and “Can I help you put that video back where it goes?” The best is when an employee gets frustrated and goes off script.

Bonus points if anyone mentions calling the police.

If you work in a restaurant, I assume you know of someone you work with who would fall for the following:

Tell this person that it is the day to empty the hot water reservoir on the coffee machine. Tell them to use a 5 gallon bucket, and that it might take a few times of emptying it…

Bonus points if they are still doing it after 3o minutes pass.