I suppose the outcome of this encounter has to be adjudged a technical knockout for Ayer:
It was at another party, given a later later in the year by the highly fashionable clothes designer, Fernando Sanchez, that he had a widely reported encounter. Ayer had always had an ability to pick up unlikely people and at yet another party had befriended Sanchez. Ayer was now standing near the entrance to the great white living-room of Sanchez’s West 57th Street apartment, chatting to a group of young models and designers, when a woman rushed in saying that a friend was being assaulted in a bedroom. Ayer went to investigate and found Mike Tyson forcing himself on a young south London model called Naomi Campbell, then just beginning her career. Ayer warned Tyson to desist. Tyson: “Do you know who the fuck I am? I’m the heavyweight champion of the world”. Ayer stood his ground. “And I am the former Wykeham Professor of Logic. We are both pre-eminent in our field; I suggest that we talk about this like rational men.” Ayer and Tyson began to talk. Naomi Campbell slipped out.Excerpt from p. 344 of A.J. Ayer: A Life, By Ben Rogers, Grove Press, 2002.