When i worked with Mike at Paradise auto he was playing around on one of the company computers which he knew he was not to be using so i decided to play a prank on him to teach him a lesson.I downloaded a program from a web site called computer pranks .com. Mike went outside to talk to a customer so that's when i went into action and installed the program. When Mike came back in the building he went back to the computer to play a game, when he started to play the game the computer prank took over and it looked like all of the files on the computer were being deleted so Mike yells to me Dick come here look at this it is deleting all of the files so i scolded him about playing on the company computer and told him the whole database had been deleted. Mike's face turned white he said to me that he was going to get fired for messing up the computer system so he started cleaning out his desk and loaded the contents into his car. It seemed really funny at the time but a few minutes later Mike started to complain of chest pains and shortness of breath i knew he had a history of heart problems so i got scared and i asked him if i could help him, he said just give him some time to relax and then i said what if i told you this whole computer thing was just a joke and you diden't really mess up the computer.(I thought my stupid joke was giving him a real heart attack)I started to panic and Mike looked at me and said i knew it was a joke now the joke is on you!!