Longest Tongue Twisters

So someone posted on my members only board supposedly the world’s longest word…..supposedly, the longest word on earth is from Finland and is as follows
lentokonesuihkuturbiinimoottoriapumekaanikkoaliupseerioppilas….

61 characters and translates approximately to technical warrant officer trainee specialized in aircraft jet engines. This word has actually been in use in the Finnish Air Force.

While messing around today on Myspace I threw out the question what is the longest…. tongue twister out there…. and so far got the following:

antidisestablishmentarianism
Pneumonoultramicroscopicsilicovolcanoconiosis
supercalifragelisticespialadocious

I am wondering if that is the best we can do for the longest word in either the English language or foreign language.. I googled pneumonoul….. and came up with nothing. Maybe the spellings are wrong. Just throwing it out there……