Continuity mistake: Miranda picks food with the chopsticks, then exactly one second later the food is gone and she is talking. Too fast for her to take it to her mouth, chew it and swallow it, for the scene takes place in real time. (00:06:00)
Visible crew/equipment: When Big arrives at the cafe a moving boom mic is perfectly visible on the glass behind with an arm and a hand moving it.
Visible crew/equipment: When Stanford and Carrie walk backstage with the models, check the reflection on the glass and you'll see: the boom mic operator, camera and, best of all, a group of technicians crouching on the floor, failing to hide and moving around when Carrie and Stanford walk around.
Visible crew/equipment: After Stanford tells Derek he's going to be a star, the steadicam operator is reflected on the mirror behind.
Answer: A popular brand of sexual lubricant. See http://www.k-y.com/index.jsp.
J I Cohen