At one point, Golda (Phyllis Diller) tells Henry (Bob Hope), "Boy, did you get a wrong number!" In 1966 Diller and Hope appeared in Boy, Did I Get a Wrong Number! (1966).

Hope's girlfriend in the film (Shirley Eaton) was 33 years (7 months and 14 days) younger than him (Hope was born May 29, 1903, Eaton January 12, 1937).

The knight on horseback that appears during the climactic chase was a reference to a then-popular series of commercials for Ajax Laundry Detergent. And Jasper's line, "Please, Mother, I'd rather do it myself!" refers to a series of ads for Anacin pain reliever.

Final film of Richard Reeves.

Eleanora Avis "Nora" Hope was one of Bob Hopes adopted children.

Continuity

After Golda comes in on the fire truck, Dimsdale's oldest daughter walked out of the kitchen wearing black shoes. When she walks back in the kitchen they are white.

Henry falls out of Monica's hotel window late at night, but the prolonged outdoor chase scene that immediately follows when he lands on a horse takes place in bright sunlight.

When Dimsdale stops the VW to pick up the last child there is a tree immediately behind the car. When everyone piles back into the car the tree is missing and there is a playground swing in the background.

Upon reaching home the daughter announces dinner is ready. Dimsdale then learns that there are not enough chops so he goes to the store where he finds the money. After he returns home the ladies are shown still making dinner.



Factual errors

The family is stopped for an agricultural inspection as they enter Arizona, but in reality the inspections were held when you entered California, not left it.

When Henry is posing as a waiter, he's making a Caesar salad with iceberg instead of romaine. The kitchen would never have given him the wrong lettuce.



Revealing mistakes

When Dimsdale takes the carton of milk out of the grocery bag it is already open.

When Henry picks up his eldest daughter and eldest son at a drive-in food stand, a group of kids bob as if listening to music, but there's no music playing.

Dimsdale leaves his western jacket in Monica's hotel room when he climbs out the window. But when he falls on the horse, and all through the horse/golf cart chase scene, he has it.

When Jasper is clotheslined by the firehose, his face goes from scared to neutral. The film is being run in reverse.

At the laundromat, Henry is obviously pulling dry clothes from the washing machine.



Crew or equipment visible

When Dimsdale is standing and talking to his girlfriend in the living room of the house he and the children are hiding in, you can see all the children in the backyard playing. The dining room is also visible and you can see a man in a dark suit sitting at the dining room table. The man is obviously not a part of the movie.

When the run-over golfer pokes his head out of the sand to yell "fore" there's fabric around his neck, likely the lining of the hole the actor was standing in.



Boom mic visible

(At 33:46 > 34:18) The shadow of a boom mic can be seen on the white wall past Bob's shoulder.