Thought of another one last night. One of those i wanna die moments when i was at school.
A few friends of mine liked to smoke a lot of weed when we were at school, so one day, over the school network i sent him a message saying.
"please report to the school san for a drugs test"
Naturally i thought it was really funny but he did not , Here comes the bad bit, one of my friends told me that if i replaced his username with a * it would send a message to EVERY computer on the network.....yep, i did it. The head, the deputy, all the teachers, the bursars office...the lot, they all got it. Yep i nearly got in serious trouble and my friends almost did get drug tested...oops. One of them when he read it ran to his room and hid in his cupboard for an hour to try not to get caught...kids eh!