Lil' Johnny Joke

In li' johnny's class, everyone was talking and all of the sudden the teacher told the class," I would like all of you to write essay  titled 'If I was a Billionaire'." Every one started writing furiously except Lil' Johnny. The teacher asks him,"Why aren't you writing this essay?" Lil' Johnny turns towards her and says,"If I was a billionaire I would have my secretary write it and give it to you!"