Egghead

Perhaps you’ve noticed my massive pulsating egg-shaped head?
Frightening, isn’t it? Yes!
But why? Why is my head so disturbing to others?
It’s not hurting anyone… Now.
I don’t have horns or antlers to gore my enemies with.
And if I rub it on you, the condition is truly non-contagious.
I just have a big egg-shaped head.
Oh, it’s my gigantic brain that concerns you.
Well, does it help if I say that I just think of happy duckies and bunnies and puppies?
No?
I guess I’ll have to blow up your brain with my psychic powers!
Just kidding. Really.