Vampire

It's cliche, but vampires are popular these days, especially with the girls, and maybe if you play your cards right you'll get a little action from one of them. You put on the costume in the change room and then look at yourself in the mirror. Or at least you would if you were actually there. Instead all you can see is the back of the change-room.

Cute you think A trick mirror. However it's suddenly got awfully dark all of a sudden. You step out of the change-room and find yourself, not in the shop, but in a dark basement of some kind. Next to you, on the floor, is a coffin full of dirt. You turn to go back into the change-room but it is no longer there.

Suddenly you feel incredibly thirsty, as if you haven't had a drink in a week. Your mouth is parched and you suddenly feel as if the fake fangs aren't so fake anymore and have merged with your mouth.

You look around for a way out but there are no stairs or ladders anywhere and the walls of the room are solid brick with holes too small to stick your finger into. The roof is wooden, and most likely the floor of the room above, but it is a good 10 feet above.