It's from the episode 'Fish out of Water' if that helps (it doesn't - I can't find it either).
The Alchemist king of the needlessly complicated,
Thu 20 Aug 2009, 14:18,
archived)
Yeah, I have it on my laptop and only watched it a couple of nights ago,but I really can't be arsed to cut it, upload it and post it ;)
(
Redsushi! Whoop! Whoop! Yes, that one!,
Thu 20 Aug 2009, 14:28,
archived)