Been sort-of involved twice.
First one was a shirty little temp getting asked to ‘leave and not come back’, for turning up at the office drunk one time too many. He took a swing at my boss, connected, then seemed surprised as he got grabbed round the neck from behind by me and dragged off the floor and into the lift. May have cranked the headlock in a little too tight as he was only half conscious by the time the lift got down to reception. Security sorted him out the rest of the way and we never heard anything from him, the company or his agency, so I guess I got away with it.
Second was two colleagues and good friends at a bar I worked in who, it turned out, had both between bonking the same girl – a case of her playing them both I think, rather than one going behind the other’s back. When they both found out there was the requisite snarling and bitching, and it came to butting heads and shoving. At one particular butting of heads, I decided I was sick of it and added two hands and a bit of momentum and banged their skulls together properly, aiming to knock a bit of sense in. The shock seemed to do the job and they both dumped the daft tart.