comedian pet peeve

I find it annoying when totally normal-looking comics open their sets with "I know what you're thinking -- I look just like the love child of John Belushi and Casey Affleck" (or "Phil Collins and Ewan MacGregor," or whatever).

I'm always thinking, No, I wasn't thinking that at all. I was thinking, when is this guy going to tell some jokes? I mean, if you are a very unusual-looking person, certainly it does make sense to remark upon your physical idiosyncrasies so people will stop staring and move on. Enormous hair, extreme tallness, being a Little Person -- all of these things deserve some mention and can be a fine way to open a set. But I have seen a great many very average-looking white guys describe themselves as a combination of two other average-looking white guys, and it is simply unnecessary.