What can steer a parent toward insanity faster than the phrase "Are we there yet?..".the words "Knock, Knock," of course.
Bob Phillips, comic genius, has mastered a gathering of knock, knock jokes that will have kids laughing hysterically--and parents just plain hysterical--but a family that knock, knocks together, grows together.
Olive to tell knock-knock jokes.
Hours of entertainment in one simple resource is the best deal in town.