I heard references to it but didn’t hear exactly what the “joke” was. Without knowing specifically what was said, I have refrained from commenting on it. Joking that a well-known john tried to make contact with someone only implies that he was trying to solicit her for sex, which wouldn’t make her a prostitute. Joking that a well-known john responded to someone’s email or internet ad, etc. would imply that she was a prostitute. So, without knowing the verbiage of the joke, I really can’t comment on it. But given what I know of the whole story I would bet that it was tasteless, classless, and not funny.