I didn't find it funny at all. Like I've berkata before, Jim finds anyway to prank anyone at their expense every time. That is also why I don't like Jim. I also hated how he talked to him at the end of it. I always hated when people that were in a perfect relationship would say that crap to me, it was annoying and never gave me solace. If Jim would have just told Andy that in the beginning without pranking him on it, I probably would have respected him a little more.
Now granted, It wasn't cool what Andy did, but I think Andy was just trying to find an identifier. Also I don't disagree that Pam was pushy and always expecting Jim to agree with her all the time. It was annoying. I hated Pam in season 5 and 6.