I went to a standup comedy show in NYC alone and found myself approached by a LVM who wouldn’t stop talking about himself. Since I was alone, I didn’t want to appear rude, but I couldn’t figure out how to get the guy to stop talking. All he wanted to do was just talk about himself for an hour straight without asking questions. (Also, in NYC, I feel like this is common, when LVM will approach you on the curb to try to talk to you.) What is the most polite way to get rid of LVM who approach you in public when you are alone?