Lutefisk!
No, I've never eaten the stuff, nor have I ever seen it. I have, however, heard tales.

Monstrous tales.

Apparently in Norway they used to soak cod in lye as a preservative. If you didn't know, lye plus fat equals soap. So there's this traditional Norwegian food that is basically soapy-tasting gelatinous fish that True Norwegians profess to love, although many have quietly told me that it's the most disgusting thing they've ever eaten.

It's long been my theory that lutefisk originated as a drunken dare between two Vikings- "Right then, I'll bet you won't eat THIS!"

Better you than me, guys.
( The Resident Loon Not a demographic. Do not measure., Thu 1 Nov 2007, 15:30, 4 replies)

Eurgh
Humpty can give you better tales of this, but there is a Swedish version that is much, much worse... My girlfriends family gave it to me once to see what I'd do and I was puking for most of the evening
(Potty Jag har smör i min rumpspringa, Fri 2 Nov 2007, 8:21, closed)

Used to:
What is this "used to"?

its very popular, especially at Christmas
(flipper is going to die in a bizarre gardenning accident, Mon 5 Nov 2007, 22:30, closed)

hah
I actually ate it just 3 days ago. But it tastes nothing. Just a wierd consistence and not to much taste. But it has to be served with beer and Akkevitt (aqua vitae). If not, it aint no good at all. ;)
(Spng, Mon 5 Nov 2007, 23:31, closed)

You know what's worse?
Gravlax

The salmon of the grave...
(TDub Nunc id vides, nunc ne vides on, Tue 6 Nov 2007, 5:27, closed)