Maniacal laughter. W just dropped off dog - she just opened front door to let him in, and hollered, "Thank you."
I was in the other room, so I walked out, and she saw me and said thanks, and started to shut the door, then pushed the door back open and did a quick up-down look, then said, "Bye" and left.
Hee hee, I made her double-take! What a glorious 10 seconds that was!
