When I heard the song the first time on radio, I liked it, mainly because it didn't take itself seriously and was kinda surprising to suddenly hear a song like that on the radio. I kept thinking the "band" must be from Estonia or maybe Germany (Germans seem to have that kind of humor as far as I can tell), but it was from Norway. Close enough.
There was a poll on the radio right after that whether it is a hit or shit, the votes seemed to go 50-50. It seemed to me that men liked it more than women. I guess it is similar humor as those Korean "Gangnam Style" and "Gentleman" videos earlier this year.
I'm still not sure what is supposed to be the funniest thing about it. Is it because it sounds like "What the fuck say?", and that's the only way to get something like that on (US) radio? And yeah, no one never really thought before what the fox says, but this finally revealed it to me:
http://www.youtube.com/watch?v=k_DVvNK7mRA They started showing the Ylvis Show here on TV due to the popularity of that video. I watched one episode, hated the show.
As it happens, some months ago when I was driving late at night (I had stopped to lights), next to my car only a few meters away, I saw a fox and (I think) a raccoon (raccoon dog? "supikoira" in Finnish) fighting on the side of the road, next to the forest. The fox screamed aggressively to the raccoon which panicked and started running away across the four lane road, away from the fox. A car coming from the other direction hit the raccoon, I don't think it survived (it wasn't driven over by the car, but the car hit its upper body pretty hard).