Hoping the granddogs don't require running after with your knee.
Not a similar experience by any means but a couple of weeks ago I was in a local small store dropping off a parcel. Two youngish lads at the till one paying for cans of drink etc, the other was then accused by the proprietor of trying to steal chocolate from the display. Wow, did it kick off, the lad protested so much and swearing and when the proprietor tried to take his photo he went absolutely bonkers, this carried on for a minute or so (me, just standing there watching hoping not to become involved, but not able to move myself!) Well, the lads eventually made for the door but this one still shouting the odds about coming back with a car and smashing the front windows when the proprietor grabs a huge stick from behind the counter - well you see all life in a village shop I must say. Anyway, nothing much else happened but it was one of those moments when I was just rooted to the spot. Strangely after they had gone, me and the proprietor carried on as if nothing had taken place! I left wishing him a better rest of the day,