It's the combination of BEST and EXPECTATION (er). They are people who expect the best out of life every day. They wake up knowing that something is going to happen during the day that will spin their life around in a positive direction. Even when something happens that seems bad it turns out to be good!
Sue is a bestspectationer. In one day her dog was diagnosed with cancer and her car got hit in a parking lot yet she still knew it would all turn out alright. And it did!
A married woman with children who decided to have an affair with no intention of ever leaving her financial security blanket, i.e.. her husband.
The main character in My Lover's Keeper, Jen Gregory, is the queen bee of mommy cheaters.