The dirties trick I was ever involved in was when I was in the Coast Gurad. We had some Summer Sea Breat onboard. They stood watch from Midnight to 4:00 am with a regular watch stander, and got to sleep in late
One time we decided to screw with this particular one, so we donned the white tyvek suits and scott airpacks like a hazmat team. then we shook the kid and yelled to eachother "OH MY GOD! WE FOUND ONE ALIVE!
That is a classic!!!!