A man with one watch knows what time it is.
A man with two watches is never sure.
What dog can tell the time ?
A watch dog !
What time is it when five dogs are chasing a cat down the street?
Five after one.
What time is it when your watchdog lets a robber take the family silver?
Time to get a new watchdog.
When is the best time to go shopping?
When the stores are open.