This album is great! Still my favorite out of all the ones they've produced. I've noticed that people find the song "I Don't Care" a little inappropriate. I don't see it that way at all. It's humor, sure, a little mature, but still humor. As Pete Wentz (the bass player) says, "It's a narcissists song."
I don't see anyone commenting about this song. I am trying to decide if this is a positive anti drug message or just metaphorical but Benzedrine is an abused drug snorted up the nose for about $20. This definitely deserves a conversation with your kids. Besides the songs with language that have been mentioned, I think 20 Dollar Nosebleed should be addressed.