Unknown song/artist/band Help!

[chickenboy582]

Forgot the song name,
Its been a couple of years since i heard it,
came out 2005-4 i believe.

Im going to sound dumb explaining it but hope someone knows what im talking about. And please no bad feedbacks. Just trying to find a song.

Its a animation music video
Problem is i dont know the band or name.
So maybe some facts might jog some peoples memory if they do know it.

Its not fully animation the band peoples faces are on the bodies and the rest is kinda cartoonish.
The band leader (singer) in one part jumps on these floating rocks and hes singing and most of the chorus is Na-Na-na na na ne-nuuuuu in a singing way and he keeps saying it over and over in some parts of the song while hes like jumping on the rocks and in the background is a guitar just playing over the same rythm.

Not sure if my info help but if you have an idea what it is
or know for sure please past the song name or youtube video of it or any info necessary to find it! Thank you so much for anyone who helps.