When I was younger and we sat on John Street there was always a small bald bloke with a moustache who took his young lad. Each time we had a referee who he'd decided was favouring the away team, he'd stand up and start furiously waving a £20 note in the ref's direction bellowing 'As tha been paid off or what ref ya bent get?!'
Amusingly, about 15 years later I took my Grandmother to see a Blades game, her first since the Sixties, going back on John Street for the first time since I was young. The bloke himself wasn't there, but someone else (who I've always hoped was his son from years before) was doing exactly the same thing with a tenner!