I think it was towards the end of the 84-85 season against Oldham. Jamie Hoyland, who may have been making his debut, is lying injured in the centre circle and has been there for some time. Andy May ran past the ref and gestured towards the prostrate Hoyland. Immediately the game stopped and I witnessed my first ever straight red in a game. May obviously said some thing but as the card came out he just trudged off. Hoyland was substituted and I don't think was seen again in any note.
Roll on 25 years and I was involved in a City Old Boys game and Andy was playing so I asked him what he said. He basically questioned his parentage followed by calling him a C*** and topped it off with you f***ing cheat whilst pointing out the youngster had been down for some time. When I asked what he had been sent off for it was the word cheat that did it!
Walking off at the end he was hit by a pie and was quoted as saying it had been warm but not his favourite flavour.
Still 2 weeks later he sent Moran off against Everton in the Cup Final.
Maybe not the worst but has always stuck with me.