I love Barry Ween. I have all of the issues of all of his series. (serieses?)
As far as playing a character with a 49 intelligence, imagine that you have a PhD in Child Psychology and Behavior, and that everyone else in the world is 3-4 years old.
This reminds me of a funny gamer story. I was playing in a 2nd ed. AD&D game that was just starting up. Since I wanted to properly represent the 19 INT that my gnome thief/illusionist had, I assigned him the character template of
Jupiter Jones from the
Alfred Hitchcock's Three Investigators series of books, which helped me play my character as smart as I could possibly play him. So, the DM starts the game by having my character's aunt in hysterics tell us that her buiness is haunted and that she won't go back but if we could just please check it out for her. I said that her house could be haunted, or that someone may be trying to scare her so that she would sell her property cheap to them. The DM gave me a horrified look of shock, formed his hand into the shape of a gun, then shot me dead.

After ressing myself, I tried to calm him down and pointed out that my character doesn't KNOW this, he's just guessing. And see? He's taking the cleric along just in case he's wrong. So, we continued playing but I did knock the wind out of my DM's sails.