A few verses about ninjas for a rap i have to write and sing?

Long story short i lost a bet with a friend and i have to now write and sing a rap about ninjas fml :L and i am having absolutely no idea what to write i really need your help if you could write 2 rhyming verse that would be unbelievably awesome and if your really helpful could you right a whole stanza thanks for any help you guys can give me :3