He is lllllame!
Calender Man is the lamest villain of all time. He likes calendars, and is always referencing to various days. Whenever it is a day (which is always), he freaks out and screams "IT'S (whatever day it is today)! I CAN'T BELIEVE IT!". Then, Fatman comes up and sits on him to make him shut up. This happened exactly three thousand eight hundred fifty seven times before Calender Man died. That's actually very impressive considering how fat Fatman is.
Calender Man used to be cool when he actually knew what two plus two was. But he doesn't remember anymore, and he is now lame. Well, lamer. Okay, he's so lame, we want to throw him in a dumpster and never let him out. Calender Man was actually voted lamest super villain ever. We are happy he is dead.
Why?
We have no idea why some guy dressed up as a calendar and started robbing people. He's probably nuts or something.
He appeared in the shame Calendar Man`s Shame.