I totally agree with the guy that reviewed this episode before me.. this def. was a episode that showed a problem in every day life.
Although, I don't know about you, but I found the idea of throwing your mother in law off of a cliff into a tar pit hilarious. The fact that the guys liked it so much just added to the comedy. Not that I agree with the idea, but Come on. It's a kids TV show. YOu have to be able to live a little when it comes the to mental picture of an old lady getting thrown off of a cliff. =)