Continuity mistake: At the beginning of every show we see Carrie walking down the street and she gets splashed by the bus. First the bus has people on it, then in the next shot they all disappear.
Continuity mistake: In the opening credits, when Carrie gets splashed by the bus, her pink tanktop changes from slightly wet to soaked in half a second.
Answer: A popular brand of sexual lubricant. See http://www.k-y.com/index.jsp.
J I Cohen