i was curious about what songs would be inappropriate to sing in prison

Is there a reason why you want to know ?

Scherzo di Notte

If you want something with lyrics, the "i just can't wait to be King"

Bottle and a gun by Hollywood Undead

Boku wa lolicon

I'm sexy and I know it.

hmm.. Those are the only ones I can think of.

Le miserables "Look Down"

you're in prison aren't you

The F.U.N. Song.

http://www.youtube.com/watch?v=BNvFY88gwoo

Walkin on Sunshine would throw a loop.

It's a Small World After All~

"Whistle" - Flo Rida.

 

That one is sure to go over well.