I don't know about the funniest thread, but this one gets the title of most ironic thread:
http://www.ultimatemetal.com/forum/showthread.php?t=153479&page=1&pp=25
excerpts:
"Tool is a very pseudo intellectual band-sort-of-thing."
"I am actually a great fan of Opeth, and will continue to be so as long as they keep producing
original quality music."
"I think it takes a keen ear to appreciate the beauty and genuinity of Opeth's music."
"I guess I can call myself an intellectual and I regret to admit that unlike myself, typical arty people would not be into bands like Opeth."
"Tell your friends to grow some balls and listen to Opeth!"
"Ok, I have come to the conclusion (both my own experience and yours, obviously) that Tool fans are even worse than us Opeth fans. I'm talking about that whole "my music is soooo much more betterer than yours cuz they got dat uber talent thingy" thingy."
"Hell, I was flipping through the Dimmu Borgir "Death Cult Armageddon" booklet one day to pass the time in my chemistry class, and I got to the last song in it. The person next to me (avid Tool fan) spots the word "opiate" immediately and goes on and on about how Tool made the word up, Dimmu must listen to alot of Tool, Tool is so great, Tool is so damn talented... at this point I just tuned out. This little ordeal made me not want to ever start listening to Tool... stupid fans...."
"It is the worst album tool has, Opeth is alot better in my opinion seeing as they are my favorite band."
"Two of my bandmates really hate Opeth, they just don't want to even try to listen for a second. Sometimes I just want to kick their ballz for that."
"I hate the majority of all Tool fans. They obsess over that band and marijuana/shrooms/etc so rediculously too much. They think no one understands Tool or other "real music" like A Perfect Circle unless they're fucked up listening to it. It's not even the drugs either, it's their ignorant, conceited, amature attitudes towards the music. They act like they know it all.."Oh, you don't know anything about anything if you haven't heard this section of this Tool song" or.."Danny Carey is better than every death metal drummer, he is the best drummer alive, but I'll be damned if I know what a time signature is." They make pathetic shrines, researches and stupid little groups with other druggie/goth/mall topic fags to act as if everyone else is beneath their feet. All their fans act nearly the same, and I've known quite a few in my lifetime."
"I fucking hate elitist Tool fans, I hope they die...and Tool is overrated.
Akerfeldt > Keenan"