from Simon Critchley, The Book of Dead Philosophers. I have no idea if there is any truth in it.
It took place in Manhattan at the party of Fernando Sanchez, a fashionable underwear designer (not many philosophers get invited to underwear designer parties). Ayer was talking to a group of models when a woman rushed in saying a friend was being assaulted in the next room. Ayer went to the rescue and discovered Mike Tyson trying to force himself on a young British model named Naomi Campbell. Ayer warned Tyson to take his hands off her, to which Tyson replied, “Do you know who the fuck I am? I’m the heavyweight champion of the world.” Ayer replied, without missing a beat, “And I am the former Wykeham Professor of Logic.”