I'm not american, so I really can't judge how things are received over there. However, why would that song be inapropriate? Googling it I found "Telephone" represents Gaga's fear of not finding time for fun given the increasing pressure for her to work harder as an artist.". Is the music video controversial or something?
Also, honestly most songs that I hear anywhere are super inapropriate if you listen to the actual lyrics. I'm pretty sure even the Macarena is about a girl having sex with multiple guys who aren't her boyrfriend and we use that at kids parties (at least that's common where I'm from).
Sorry for a reply that's not really an answer, just an interesting thought I had. Genuininely curious why it'd be inapropriate though.