Running with scissors - S3-E11
Revealing mistake: When Samantha and her partner are using the 'swing,' you can tell from the long shot that Kim Cattrall is actually wearing some sort of prosthetic around her hips, to simulate her rear area. It is larger, and sticks out prominently in an unnatural manner. This was probably done to ensure modesty for the actress. (00:22:30)
Answer: I'm a long-time fan of the show, having re-watched it many times, and I definitely remember slightly different dialogue at the end of that episode than what's on my DVD. I'm afraid I have no idea why this change might have been made or any other info, but you're not insane.
Purple_Girl