Frasier: Oh, my God.
Niles: What is it?
Frasier: It's Viagra!
Niles: They give that away with Velveeta?
Frasier: No. It's a prescription for Martin Crane. Why do you suppose he would put it in here?
Niles: Hiding it, I assume. What better place than a box Pandora herself would be loathe to open?