Granted it wasn't very clever but I think it highlights the need not to be sarcastic etc. etc. on the radio. Had the controllers been aware that it wasn't a hoax, then they may have advised accordingly or not given permission at all. I've done my PPL at Coventry and its a friendly place but accidents do happen. Having said that I wouldn't jump out of a plane at 1500 ft!!!!
Happy basejumping
AF