Anus Rectum Face

A terrifying serial killer who roams the woods of the cocklands.
Little is known about this mysterious person except for their appearance. They possess a face (possibly a mask) with what appears to be a human rectum shown on it.

Sometimes in the woods, campers may hear their friends (s)cream in the night, followed by an ominous utterance:

"I have left you leaking and squeaking."

May whatever god exists have mercy on the poor individuals unfortunate to encounter this terrifying entity.

camper 1: I'm just going to go out into the woods to piss.
camper 2: Sure.

<after five minutes have elapsed>

camper 1: AHHHHHHHHH IT'S ANUS RECTUM FACE!
A.R.F.: I have left you leaking and squeaking.

camper 2: I'd better get the fuck out of here