I bet it is just like black nothingness, like he does not have an upper lip. I know that my pops was always mustachioed, and I finally got him to shave it off, and he had no upper lip! It was truly amazing. No upper lip!
Nooo!!! I believe that Mike's mustache is a tribute to the original Jon-Voight-Watching-An-Anal-Porn-Scene-Mustache. I'm sure he decided to grow his mustache on the day he wrote the song "Deliverance"
After he shaves, he should also bust out the top hat again.
Edit: It'd be cool to see this lot play a reunion gig. The other three guys are a computer tech, a politician, and a cyclist respectively. Isn't that strange?