Continuity mistake: When Sally is faking her orgasm, the slice of meat on her sandwich changes the way it's folded over the bun between angles. (00:45:10)
Continuity mistake: In the scene where Harry and Sally are having lunch in the diner (the orgasm scene), Harry's napkin is in his lap. You can see it when the camera angle is from the side showing both of them from the knees up. Every time that angle is used, the napkin is in a different place or altogether gone. (00:46:00)
Continuity mistake: In the deli scene when Sally is faking her orgasm, the camera movies to Harry. You can see the waiter approaching. When the scene is over, the waiter again approaches to take the order from the other woman (Rob Reiner's mom). (00:46:25)
Continuity mistake: During the dinner scene in the restaurant, Marie puts down her glass of cola on the table. In the next shot, she is drinking from the glass again. (00:53:50)
Continuity mistake: Once Harry met his ex and her current partner, Sally in the view from behind moves her arm behind his - the movement can be easily spotted because of the lyrics sheet she is holding. But in the next shot, she asks him if he's OK, and a few seconds later, she is repeating that same movement. (00:59:15)
Continuity mistake: When they are playing win, lose, or draw, Sally is trying to draw baby talk, and if you keep your eye on the drawing the baby looks different all the time and has eyes, and then doesn't have eyes, etc. (01:04:15)
Continuity mistake: After their first time having sex, Sally gets up to go get some water. When she comes back, she gets back in bed with Harry and settles herself with her head laying on his left pectoral. There is a quick change of shot, and suddenly her head is much higher, with her head laying on his left shoulder. (01:12:30)
Continuity mistake: The interior scene on the airplane shows a 707, with the lights mounted on distinctive boxes underneath the overhead bins. The airplane shown landing is a 737, which had the interior lights mounted flush.
Continuity mistake: When Harry and Sally are at a restaurant having lunch (this is when she has the fake orgasm), if you look at Sally's sandwich when they show her from behind, you will see that where she has bit into the sandwich has changed. First the bite is on the right, then the middle, then the left, etc.
Continuity mistake: When Harry and Sally are in the car driving to New York, in the front shots you see the car has no rear-view mirror.
Continuity mistake: During the fake orgasm scene, the bite on Harry's sandwich increases and decreases between shots.
Continuity mistake: When Harry and Sally are on their way from Chicago to New York, Sally's hair changes. You have to really look for it, but watch the curl in front appear and then disappear.
Continuity mistake: In the fake orgasm scene in the restaurant, when Meg Ryan holds her sandwich up there's one bite out of it, then it flicks on to Billy Crystal and when we see the sandwich again it has two bites out of it, but there was no time for her to have eaten any more. Later it has one bite again.
Answer: Sally could be upset for having to drive Amanda's boyfriend, or it could be awkward because they don't know how to say goodbye. There could be a number of reasons why things appear tense between Sally and Amanda, just not explained.
That was a big question mark for me as well when I watched the movie, to the point that I had to re-watch the beginning because I was sure I had missed something; their behaviour doesn't make sense.
Sammo ★