Spooky Halloween Mirror Message.

I will show you how to make a spooky message appear on a mirror (or any piece of glass) when someone is taking a shower. >:O 
Works great on Halloween!!

First of all, get a small amount of flowing soap on your finger, the less the better because if there is too much, the victim will see it.

Next simply write a message on the mirror with the soap. When the victim takes a shower, the steam will fog up the mirror, except for the soapy parts and the message will be clearly displayed.... Have Fun!