One mom dropping her 2 year old off, we'll call the mom "Jane." Well Jane's daughter is not a morning person and leaving her mom just isn't on her list of easy things to do. One tactic a lot of parents use is to get their child occupied and then sneak off when the child is happy and not paying attention. Sound familiar?
She's getting down the hall, opening the door, whispering bye to me and quietly closing the door with about 2 inches to go when another 3 year old girl sees her and yells top notch, "Goodbye Jane!"