Watch the watch, Wooffi!

Bald muß ich den neuen A Joke a Day kaufen, aber erstmal hat der alte ja noch ein paar Seiten drauf und amüsiert mich somit täglich - heute hiermit:

A girl was visiting her blonde friend, who had recently bought two new dogs. The girl asked the blonde what their names were. The blonde responded by saying that one was named Rolex and one was named Timex.
Her friend said, "Whoever heard of someone naming dogs like that?"
"Duh...," answered the blonde. "They're watch dogs!"