You just reminded me of the time I was at a pub quiz with a mate who was totally hammered
He stood up, and carefully chose the quiet gap after a question had been delivered to point at a guy in a wheelchair and shout "YOU'RE NOT FUCKING DISABLED!!!"

He swears that he had shared a taxi home from a club with the guy (a total stranger but still possible in light of my friend) the previous week and he had been able to walk. I almost pissed myself and still laugh about it now.
( Nimble Colin camera-wrangling, globe-trotting whisky enthusiast, Mon 11 Apr 2005, 14:57, archived)