That song is so awesome.
(I'm a huge fan of Frozen. ^^ )
On-topic though:
This
It was a bit of a fiddle trying to find it again though, considering it doesn't exactly have any lyrics. >~<
I think a more correct term would be "impolite", or "rude". ^^
But ontopic: I don't think anything in the show is offensive.
(Then again, I've only watched the first 2 seasons. ^^' )