23rd Oct: It's time for the second TV Tropes Halloween Avatar Contest, theme: cute monsters! Details and voting here.
You place the bucket of water on the half-open door, giggling to yourself in advance at the great joke you are playing (little things please little minds).
"I don't know why they persist in doing this," said Lord Vetinari. "It's not funny, and someone could get hurt." There was a groan from the other side of the door.