She got out the vacuum and was removing all the dust bunnies from the top of the mirror, cabinets, etc. when she decided to dust the top of the door (an act that I, as a man, would have NEVER EVER thought to do).
What she found was priceless:

It says: Rev ---> Entry Shitterrrrr
OMFG!! I about died when she told me about this!
We're going to check all the doors tonight to see what else might await.