Cover girl - S5-E4
Revealing mistake: When Samantha walks in on Marcus 'servicing' Stanford, the positioning is all wrong. Marcus' head is too high up to be realistic for what is happening. His head is almost up to the level of Stanford's chest. (00:21:20)
Cover girl - S5-E4
Continuity mistake: Carrie goes inside the changing booth to try on the pink outfit. Then after Stanford and Marcus arrive, Carrie suddenly whips the curtain open to reveal herself completely changed into the new outfit including shoes, after only 21 seconds. These events happen in real time; and there is no logical way that Carrie could have changed from one complete outfit to another in that time. (00:17:45)
Cover girl - S5-E4
Revealing mistake: When Samantha is walking down a busy NYC street talking on her cell to Carrie, you can see a man in a blue jacket walking right behind her. The next shot of him; he suddenly pulls out an obvious black camera and takes a photo, aiming it directly at Samantha in front of him. This is apparently not an 'extra', but someone on the street who wanted to take a picture of Kim. There are also a lot of other people in the background walking behind her at this point. But in the next shot of Samantha still walking on the same street and talking on the phone, there are suddenly no people right behind her at all. It's an empty space, and no time has passed for them to have dispersed. They may have cleared the area behind her; because people weren't behaving properly during filming, such as the man taking her picture. This would normally be a continuity error; except that in this case I believe the sudden change in background was due to the guy taking the picture inappropriately, not just a slip in background filming. (00:10:30)
Cover girl - S5-E4
Continuity mistake: When the weightwatchers guy is about to leave Miranda, her hands are crossed over her tummy or not, depending on the shot.
Cover girl - S5-E4
Continuity mistake: The second time a guy goes down on Miranda the sheets cover his nape or not depending on the shot.
Cover girl - S5-E4
Continuity mistake: When Sam asks for Stanford's boyfriend's opinion she is 30 centimetres away from Stanford. When the shot changes she is a metre away.
Cover girl - S5-E4
Continuity mistake: Carrie discards all the dresses and Sam lowers the ones she holds down to knee level. From the opposite angle she is holding them at chest level.
Cover girl - S5-E4
Continuity mistake: When Sam chooses dresses for Carrie her hand is either on top of the clothes hangers or behind, depending on the shot.
Cover girl - S5-E4
Continuity mistake: While choosing dresses, Carrie is holding the clothes rack or not depending on the shot. This swaps back and forth.
Cover girl - S5-E4
Continuity mistake: During breakfast, Carrie stops sipping form the straw and raises her head. From another angle she is still sipping.
Cover girl - S5-E4
Continuity mistake: The second time Miranda bites her Krispy Kreme, its shape changes at least 3 times.
Cover girl - S5-E4
Continuity mistake: When a woman picks up the book on the floor her bag is falling off her shoulder, sliding down her arm. A shot later it's resting on its shoulder.
Cover girl - S5-E4
Continuity mistake: When a woman picks up the book Charlotte threw the curb, the place where she is standing changes between shots: in the close-up she is suddenly next to the edge of a cement block.
Answer: A popular brand of sexual lubricant. See http://www.k-y.com/index.jsp.
J I Cohen