Examine the mirror.

You take a closer look at the mirror. Through a thick layer of dust, you can just make out your reflection in the glass. You reach out to clear away some of the dust with your hand...

...and find that your hand sinks into the glass surface as if it were sand. Alarmed, you try to pull your hand back, but it won't budge! Then you notice your reflection is not quite your reflection - you see your reflected face grinning evilly back at you as the mirror draws you further into itself. Soon, you are drawn completely through the glass. You turn to look back at the mirror, only to find that you are no longer in control of your movements. Your reflection stares back at you from the right side of the mirror. Then your reflection smiles - you feel yourself doing the same - and raises a hand, causing you to raise your own hand.

You watch in horror as your reflection - and you - slowly starts to strip naked and begin wanking your cock to full hardness. You both sit down on the floor of the room, and with the other hand, your reflection explores his asshole, slowly inserting a finger, then two, in and out, causing both of you to gasp with pleasure as you copy the same actions. Your reflection continues to play with himself, furiously wanking, until with a cry of despair you both cum at the same time. Then your vision fades...