A fellow is standing in a bar and another guy walks up to him and says, "Are you Joe Smith?"
The fellow says, "Yes, I’m Joe Smith."
He says, "Were you in Chicago in early June?"
The fellow takes out a little notebook and rifles through the pages, and says, "Yeah, I was in Chicago in early June."
"Did you stay at the Hyatt?"
The guy looks through his notebook again and says, "Yes, I stayed at the Hyatt."
"Were you in room 1368?"
The fellow checks his notebook and says, "Yes, I was in room 1368."
The guy says, "Did you know a Mrs. Wentworth who stayed in room 1369?"
The guy looks in his book again and says, "Yes, I knew Mrs. Wentworth who stayed in 1369."
The guy says, "Tell me, did you have an affair with Mrs. Wentworth?"
The fellow scans his notebook and says, "Yes, I had an affair with Mrs. Wentworth."
The guy says, "Well, I’m Mr. Wentworth and I don’t like it!"
Again the fellow looks in his notebook and says, "You know what? Neither did I!"