I'm an Alien... Get it?

This is my homeroom class and I at today's Halloween party. I'm an alien... get it? I was shrugging my shoulders to look other-worldly but it just looks like I have a really small head. The backdrop is from a song I will never, ever get out of my head:
Halloween! Halloween! What does it mean?
Halloween! Halloween! What does it mean?
Halloween! Halloween! What does it mean?
Halloween! Halloween! What does it mean?
Halloween! Halloween! What does it mean?
Halloween! Halloween! What does it mean?
Halloween! Halloween! What does it mean?
Halloween! Halloween! What does it mean?
Halloween! Halloween! What does it mean?
Halloween! Halloween! What does it mean?
Halloween! Halloween! What does it mean?
Halloween! Halloween! What does it mean?
4 eva