Hmm ... we're already more than 24 hours into this thread and I'm still having troubleconjuring up some nonsensical claptrap - apart from (before someone else says it) what I've occasionally been know to post, that is.
As for the longest thread - religious debates aside - I seem to remember Bornatbirth's 2009 topic on 'farting'set something of a record in terms of "hot air" [pun intended!]