Imaginary conversation between two door-to-door salesmen as they approach a house with this sign out front.

Salesman #1: Wait. This one's got a ... Log?
Salesman #2: A Log? Not a Dog?
Salesman #1: Yeah, it looks like a Beware of Dog sign where the D faded away.
Salesman #2: No, that's not faded. It's intentional; Log.
Salesman #1: Beware of Log?
Salesman #2: I suppose so.
Salesman #1: Do you think they're talking about that piece of wood by the door?
Salesman #2: It does look about the size of a Log.
Salesman #1: Is it chained to the house?
Salesman #2: I think it is!
Salesman #1: Um. Do you hear that bark?
Salesman #2: We should skip this house.
Salesman #1: Did that Log just roll over?
Salesman #2: Run!