"That Way" or something by Nsync or however you spell their name.
"I Want it That Way" by the Backstreet Boys
It's a parody of Coolio's song "Gangsta's Paradise."
it makes fun of r. kelly and his trapped in the closet
R Kelly's 'Trapped in the Closet'.
That is not a Weird Al song.
Weird Al NEVER made a song about Barney on fire.
Avril Lavigne's Complicated
its a parody of "Ridin" by Chamillionaire
"Piano Man" from Billy Joel.
He made a parody of "Bad" by Michael Jackson.
This may not be the best choice of a song for school, since there are doubtlessly some students in your school who are fat, and who may feel that you are trying to make fun of them by using that particular song. Although it is a brilliant song.
Weird Al never does a parody of any song unless the musician who wrote that song gave him permission. So he was clearly not punished at all for that parody.