Niles: According to this, there was a three-week period where Mom and Dad had screaming matches every night, after we went to bed.
Frasier: I don't recall that.
Niles: Oh, that's right. That was the same period where you insisted on wearing the wax earplugs and the slumber mask.
Frasier: Well, I had to, what with you underneath the covers with a flashlight looking at the National Geographic.
Niles: I was looking at the maps.
Frasier: That's what makes it so scary.