Ah dammit man, now I've actually hurt myself laughing.
He goes through all the trouble to rename himself to something a little less offending and your keyboard renames him to TheFu.. , hahahaha.
But I agree, Fuz is great, I like the random turns in the conversation he creates and the way he breaks the ice. I also like the fact that the show is not preplanned or touched up. If the monkeying around increases, then editing might become even more of a zoo keepers job.
EDIT
Cleaning out your keyboard, might also fix the problem. I don't know what kind of weapons you use while typing, but chances of one key actually physically breaking over it being caused by some filthy contacts are slim.