The wise man bit was just me being ironic. The more I speak or type, the more you will find that my sense of humor seems more and more obscure, or so I've been told.
Apparently, my friends tell me that strangers think I'm funny until they get to know me. Then they get confused. Or they become exaclty like me, and there's no need to tell the joke, as we are both laughing at it at the same time anyway. . .
I assume that something similiar has happened to all of your friends too.