It - A Scary Clown Limerick

So what makes this clown so scary
With kids and adults so wary?
In movies and books
He gives creepy looks
With a balloon the hue of a cherry.

Headless Horseman Halloween Limerick (Sleepy Hollow)

There once was a man with no head
The thought of him filled me with dread
The man and his horse
Were a dream, of course
I crooned as I trembled in bed.