How To Detect a 2-Way Mirror
Simple trick.
Place the tip of your fingernail against the reflective surface and if there is a GAP between your fingernail and the image of the nail, then it is a GENUINE mirror. However, if your fingernail DIRECTLY TOUCHES the image of your nail, then BEWARE, for it is a 2-way mirror!
(via
digg)
Update
Cynical Bastard notes in the comments that
Snopes has this as false.
