Continuity mistake: When Carrie says Aidan is a good man she places her hands on his face, but his collar gets stuck in between. From a different angle the collar is several inches below.
Continuity mistake: While Charlotte has dinner with a couple, he has his arm around her shoulder, leaving no gap in between them; yet from the angle behind there is a gap.
Revealing mistake: When Sam is having sex with the doctor, you can tell she has a skin-coloured bra to stop her breasts from being shown.
Continuity mistake: When Charlotte is talking during breakfast her left arm is either still on the table or moving.
Continuity mistake: When the breakfast scene starts, Sam is either drinking from a straw or holding her drink away, between shots.
Answer: A popular brand of sexual lubricant. See http://www.k-y.com/index.jsp.
J I Cohen