Continuity mistake: Maya Rudolph's mother passes gas outside in front of the open window. She comments about the dog getting into her leftovers. The scene cuts to Maya Rudolph looking over her right shoulder (as if looking at her mother). But you can see the open window is actually to her left and you can see part of her mother. The camera pans back to the mother then back to Maya. Again, she looks over her right shoulder at her mother but now you can see her mother more ahead and to her left. (00:36:52)
Visible crew/equipment: When David Spade is telling the others about his naughty dream and we see Rob Schneider's hot daughter in the background (leading everyone to believe that it was she that he was talking about), a boom mic can be seen at the top of the screen (when the camera is facing the lake).
Continuity mistake: In the dock scene where Rob Schneider kicks David Spade in the groin the first time for supposedly sleeping with his daughter, his good foot has a black shoe on it. Then as you see him kicking Daid Spade he has no shoe but is in bare feet, But when he falls down from the pain in his bad foot you can see that he now has a black shoe on his good foot again. (00:11:45)
Continuity mistake: In the scene at the water park, the ladies are looking at the Canadian. In the background there is a yellow towel on a chair. But between the shots, it changes to a blue towel and then back to a yellow.
Other mistake: Mama says that Curly must have gotten into some of her leftover pasta fagioli, but that wasn't among the things she ordered the night before at the restaurant.
Continuity mistake: When Greg and Andre are waiting in line to go on a water slide when Jasmine gets off, there's a girl wearing a black bikini, plus other people. When the next man gets off Greg and Andre have disappeared, and the girl with the bikini and the other people are in the same spot.
Factual error: Adam Sandler is cooking bacon on the bug zapper, laying the meat on the outside cage. That couldn't happen, since the outside of a bug zapper is not hot and has a covered protection cage to avoid shock. (The cage is what the bacon was lying on.)
Other mistake: In the crane shot of the wave pool as it goes over the crowd you can see them looking at the camera. (00:58:00)
Factual error: The championship game was in 1978. Thirty years later, in 2008, the coach dies. Lenny rents the lake house for the three-day Fourth-of-July weekend. In 2008, the fourth of July fell on a Friday, not on a Monday as depicted in the movie.
Revealing mistake: During the close-ups of Wiley when he's in the body and leg casts, it's quite obvious that both of his hands are made out of plastic.
Continuity mistake: At the restaurant, Maya Rudolf makes a joke about Chris Rock's inability to cook. She's smiling about it. The shot cuts, and she's no longer smiling.
Answer: Yes. It shows his age and another portion of his life that he's covering up. He makes mention of his toupee later in the film.