Continuity mistake: In the first episode, in DJ's room when Stephanie is crawling across the curtain rod, you'll notice that there is a giant window, and a window behind Stephanie's bed. In later episodes, the giant window turns into a 3-paned bay window, and the window behind Stephanie's bed disappears.
Continuity mistake: On the first floor of the house, there are two staircases leading up to the second floor - from the kitchen and the living room. But on the second floor, there is only one staircase leading down. And it doesn't matter which one they use, they still end up coming upstairs in the same place.
Other mistake: In the opening credits when it shows their house, you can see the garage is located in the front of the house. But when the family goes down to the garage or Joey's room when it was later transformed, they used the stairs all the way in the back of the house to go down to the garage. So that would mean the garage is really big, (which it isn't when you're inside it or its not the same house).
Continuity mistake: When Jesse, Joey and Danny start telling Stephanie and DJ the story while they are laying in DJ's bed, Stephanie has 2 barrettes in her hair. Watch closely and then there's only one barrette in her hair, and then when Danny puts her to bed, there are 2 again.
Continuity mistake: Near the end of the episode in the shot where Danny says "OK, so we had a little help," the top three buttons of Jesse's shirt are unbuttoned. The camera switches to a shot of their moms and then back to the guys. In this shot, only the top two buttons are unbuttoned.
Other mistake: When Danny falls overboard off the boat and into the water, you can hear the water splash, but you never see the water. Same with Joey, he dives off the boat, but you never see the water splash up. You would think you would see water splash up especially since how Joey jumped in. That would create a big splash.
Continuity mistake: When Danny is telling Stephanie to get a drink of water so he can talk to DJ, her blanket is up to her armpits and her hands are top of the blankets. In the next shot her arms are under her blanket which is up to her chin, and then in the next shot her arms are back on top.
Continuity mistake: When Joey is ironing, DJ starts talking right as Joey sets the iron down on the ironing board in front of him. Then Joey starts talking and the iron is still in front of him. But while he's talking the shot changes and the iron is now seen behind Joey on the countertop. Then a few seconds later the iron is on the ironing board again. (00:03:05)