Continuity: When Robbie and Julia are making their friend the limo driver run through the obstacle course to prove his driving ability, you can clearly see both right-side hubcaps come off the car. Then, just a few seconds later, the hubcaps are back on the limo.

Factual error: In the scene where we first meet Rosie, it opens with a shot of the house and then goes inside, passing by some pictures of Rosie and her husband. One of them, a picture of their wedding, says "Frank and Rosie - Wedding 1948", but then when Rosie is talking about how her husband will know how much she still loves him after all those years, Robbie says that he hopes that he and Linda will be as happy as Rosie and her husband on their 50th anniversary. If they got married in 1948, they would be closer to their 40th wedding anniversary. Since the movie is supposed to take place in 1985, this would actually be their 37th wedding anniversary.

Continuity: At the cake shop for Glen and Julia's Wedding, Adam Sandler is feeding Boy George some samples of cake. First you see 2 pieces of cake on the plate. Then he feeds one to that weird person, and in the next frame with the plate it's empty. Then after that there is still one piece of cake on the plate.

Continuity: When Robbie (Adam Sandler) is lying in the trash dumpster, after he just got dumped, you can see him covered with trash. Then the camera switches to Julia (Drew Barrymore), and when it goes back to Robbie, there's different trash, and less trash, and it isn't in the same position.