Somehow, me and a friend managed to convince another friend to start kickboxing with us, so on the weekend we thought we'd just show him a thing or two, get him interested in it, realise how fun and easy it is, so what happens... he dislocates his knee within 10 minutes, and I have to go with him in the ambulance to the hospital, 4 hours later he's got a full leg cast and he can't walk without crutches for the best part of the next 2 months....

Moral of the story... don't do kickboxing with me for your own safety