Itchy Finger

I have an itchy finger I have an itchy finger It's not the one that you think Not the one on my hand It's not the one That I use to poke my nose with It's not the one That I use to play my guitar It's not the one That I use to point at you when you're wrong I have an itchy finger I have an itchy finger My head keeps bothering me Like I'm about to explode No, I can't take it any longer I need to sing this once more I have an itchy finger I have an itchy finger Someone once told me My pen is black And they just told me its because My knee grows