My favorite STUPID comment was on a "Let's Fight About Smoking" thread. It didn't start as a "Let's Fight About Smoking" thread, though.
There was a Canadian guy (not THE Canadian guy) who was so pissed off at American smokers at WDW that he threatened - and he was dead serious, this was not a joke - to come down here and fart on us. He went into his GI problems and why his farts were so bad and how he normally wouldn't be so rude as to fart on people, but he was going to do it.
Nothing on this thread even comes close.
I guess he was from Funkytown.