Audio problem: When Spence jumps into his car to escape Binkey at the racetrack, he just jumps in the car, puts it in gear and drives off. He never started the car up: the car is not shown during a brief cut to the actress, but there is no start-up noise. (00:07:30)
Continuity mistake: Binky is driving and talking to the boss via car phone as he chases Spence. When the horse ridden by Turnip is approaching, Binky is holding the steering wheel at the bottom. Brief cut to Turnip crying, and Binky is driving with the right hand at 3 o'clock. (00:08:55)
Continuity mistake: Dennis has just argued with the manager about the fuzzy slippers at work. He is skating off to deal with the last delivery. When there's a cut, notice how there's a man with a white jumper leaning against the white Cadillac, facing the guy with the red jacket. That man in white was not there before. (00:10:15)
Revealing mistake: Binky and Turnip are waiting for Ted Danson to show up at the racetrack to place his bet. Turnip starts the first sequence peeping from holes carved into the magazine. As he begins walking, notice an old man with a grey jacket and a blue shirt, reading a newspaper, sitting, and immediately after he comes in frame, an elderly couple coming in from the left. The man is wearing a brown suit and shirt about the same colour. When there's the first cut (after the odd guy sticks the tongue out), the two are rushing towards the entrance, opposite way from before, and there's the blue shirted old man standing, and a moment later there's the brown shirt guy passing by, just fresh off walking in and with another person, not the woman from before. The same guy is also seen in the bathroom in the next scene. (00:18:20 - 00:20:10)
Revealing mistake: When the two gangsters get to the racing tracks entrance searching for Ted Danson, look at the old lady in the background. You'll know which one instantly, because she is looking at the two gents. The two guys are kinda conspicuous, so you might think it's pretty fair and there's no fourth-wall breach here. Same thing when she obviously cracks a laugh when the two make their hasty exit after Stuart Margolin gets hit in the gut by a silent moustached man, it makes sense. But, right after the two exit stage, she casts a look right into the camera, and for the rest of the shot (as Danson and Howie Mandel enter) she peeks again a couple times. (00:20:20)
Continuity mistake: Spence convinced Dennis to act as decoy as he places the bet. Dennis puts the money in Spence's hands, who is holding a wallet in his left hand. Cut, and now Ted Danson is holding just a wallet, and in his right hand. (00:21:30)
Continuity mistake: Dennis followed by Spence is walking out of the bathroom with a handful (soon mouthful) of soap. Camera outside, and to walk out of the bathroom behind them, a guy with a blue jacket who was nowhere near the door, and not one of the two people who were instead seen headed towards the door. (00:21:45)
Revealing mistake: When Turnip mounts in the car (ending up destroying the passenger door), the car has the rear-view mirror. During the chase though, the mirror is gone, but it's back when they finally block their way in the alley and Turnip whacks his own nuts. (00:26:30 - 00:28:30)
Visible crew/equipment: The two protagonists cash in the win and are running from the goons who chase them. The car of the two baddies is parked outside. During the sequence when the car loses the second door, you can see reflected with great detail the camera crew and stage lights, right in the side of the car. (00:26:50)
Continuity mistake: In the car chase starting from the racetrack, the protagonists take a sharp right turn, which will make the bad guys crash into a toy stall. During this turn, different cars appear in the middle of the crossroads between shots. (00:27:45)
Visible crew/equipment: Binky and Turnip chase the protagonists after they cashed in. They crash into a toy stall, with the crash shown in a quasi-POV shot. To get that shot, a camera was mounted inside the car, obviously. The problem is, for the next 3 cuts, you can see that camera. (00:27:50)
Continuity mistake: In the shot when the baddies crash through the toy stand, the hole in their radiator grill is patched up, unlike the rest of the scene. (00:27:55)
Continuity mistake: Turnip is playing (and hamming) with a plush toy dog that didn't get in the car during the crash nor he is holding it in the wider shot. (00:28:00)
Revealing mistake: A farcical comedy movie does not need to have the most realistic action, but when the protagonists' Volkswagen Thing gets shot down by Turnip's double barrel, the engine 'explodes' with real flames and all, but no bullet holes at all in the metal. It's like it died from being scared. Fun part is, later the detective shows up at Spence's house and mentions exactly bullet holes. (00:28:25)
Continuity mistake: An enraged mafia boss throws the billiard ball to Turnip, who ducks it. The ball after the impact with the door bounces off with a downward trajectory at sharp angle, and yet the next slapstick gag sees Binky, standing a few meters away, hit in the forehead by it. (00:34:20)
Continuity mistake: Spence and Dennis arrive at Dinkie's in the doorless car they stole from the villains. In the first shot there's no skater waiter in sight, in the second one darts by the right car door hole. (00:35:00)
Revealing mistake: At the dinner at the Indian restaurant, when Howie Mandel begins eating the flowers, Blake Edwards' daughter breaks character and cracks a smile, regaining the deadpan composure of the role only at the very end and in the next shot. (00:57:25)
Continuity mistake: When Spence's brother in-law goes to call Spence after his car accident with Binkey and Turnip, he only dials 3 digits the first time, then 6 the second time, then 5 the third time. (00:58:10 - 00:58:50)
Continuity mistake: The two gangsters enter Spence's bedroom when Claudia just went to the bathroom. He throws the sheets over his own head. When the camera is back on him after the cut on the stooges, the sheet is draped differently over his arms and shoulders. (01:00:25)
Continuity mistake: After Dennis punches Spence in the nose the piano starts playing and Dennis just pushes it to turn it off even though every time they had to turn it on and off before then they had to use the on/off switch. (01:01:40)
Suggested correction: I took it as a very movie-like "when you don't know how to fix/start/stop/do stuff to a machine, just hit it" moment. Thing is though, just mere seconds before in the same scene, Howie Mandel bumped against the piano, hitting harder than it does to stop it, and it kept going, so I do think that this entry has some merit.
This correction is unnecessary. It validates the original mistake at the end.
The original contribution points out something that, especially in movies, happens a lot: hit some device and it stops. Personally I don't see it as a mistake and I would have not reported it. But I do think it's inconsistent, that it stopped that second time and not the first. I could have submitted a new mistake entry but I did not find it necessary, or a request to change the entry's wording, but I think it is best to keep the original contribution and present a possible explanation and suggestion of a possible, slightly different, inconsistency in the same scene.
And none of that is needed. Explaining why a mistake happens is never a valid correction. And explaining the mistake in a different way isn't needed either (although one can change the wording of a mistake if one feels the mistake isn't clear enough).