Jokerface

When someone is so attracted to the concept of the Joker from the Dark Knight film that they get physically turned on, this leads to them wanting there sexual partners to become more like Heath Ledgers Joker, making them wear make-up or even giving them there own Chelsea Smile, after this they are mounted and ridden for hours on end until the person who actually did the Jokerfacing is worn out.

A facial position used as an attempt to look as scary or maniacal as possible.