There was one incident awhile back at a country club that I guess was more of a game than a prank. We had gotten a case of cocktail weenies and it was one of those cases that came with about 30 stick on labels. For fun on a very slow night, every chance we got, we'd try and stick it on the back of the dishwasher without him realizing it. The person who made him realize what was going on had to make family meal for the crew for a week. The fry cook finally got a little too anxious and the guy finally realized what was going on. We got about 18 which is either really impressive on our part or really sad on the dishwasher's part, all depends on your prerogative.
There was another incident at work awhile ago that involved me turning a prank on another guy. One of the waiters was drinking cranberry juice and one of the cooks who is the prankster of the kitchen decided to put a few shakes of Tabasco in his drink. I saw him do it and thought I'd turn the tables. I immediately. Circle around the kitchen to when the waiter was getting something from the cooler and the cook couldn't see. I just said very quickly "Mauricio put Tabasco in your drink. Don't drink it". He started to get mad until I told him we'd turn it on him. I told him to look at me every time before he took a drink. I told him I'd scratch my left shoulder, it was safe. If I started adjusting my hat, it wasn't. When the cook wasn't looking I then switched the drink to a safe one. We first played with the guy; alot of raising the glass to his lips and then putting it back down. It drove the cook nuts. Finally, I gave the signal, and the waiter took a nice long drink. The cook leaned in real close and then looked dumbfounded when the waiter showed no reaction put the cup down and left. Not knowing what went wrong, he went and put Tabasco in again. I promptly switched it and we played the game again. This went on for about an hour; a lot of drink switching going on. Finally, the cook went to the waiter and admitted what he did wanting to know what was going on. The waiter looked annoyed but played along. I then handed the cook his own drink. He took a swig and the spit it out. While focusing so much on the waiter, I slipped a bit of vinegar into his cranberry juice. He laid off the pranks for awhile.
There was one more but this was more of a mind game on the same cook. It was my birthday and I don't really like people knowing. They were never a big deal in my family. He found out and announced to the kitchen before service started which greatly annoyed me (He knew I don't like the attention). I then promptly walked away from the kitchen where everyone was and disappeared for about five minutes. I then emerged and the cook asked where I was. I said "I don't know. By the way you might want to check your car". He immediately wanted to know what I had done and I just kept saying "I don't know". He then walks off for a moment and a dishwasher comes up and asks what I did. I said "Nothing. I just went and sat in dry storage for five minutes planning". The rest of the night I kept dropping hints about his car. Then when I finally left for the night, I said, "I hope you like fish". He then went to his car and searched every inch for something I may have done. He then spent the next 40 minutes driving back to Chicago, thinking he was smelling fish. I found out later when he got home and kept asking people if they smelled fish. Funny part was I left the next day for a 4 day vacation so he didn't get a definitive answer till I got back.