Not hilarious, but always makes me smile when I remember it.
Late Eighties in the Mayflower enclosure, very near where the Evergreen fanzine lads (Dave, Dom et al) used to stand. Argyle on the attack near us, but the ref then judges we have fouled one of their players. Fair enough decision probably, but certainly a little bit soft.
After the initial groan and "FFS ref!" etc have died down and all is quiet, one of the Evergreen group (not D or D), a mild-mannered gentleman not given to shouting abuse at refs at all, uncharacteristically let the frustration get the better of him. The free kick has not yet been taken and the ref is easily within earshot.
"Referee, you are biased" he shouts loudly.
Followed by a beautifully appropriately lengthed pause of a few seconds as he was presumably reflecting upon what he had just exclaimed, and whether it was actually true.
Followed it up with an equally loud
"And so am I"
The timing was perfect.
Such self awareness is rarely encountered at football matches.