A verb that describes the act of lowering one's expectations for something in order to prevent against the disappointment of them not being met. It is derived from the popular TV sitcom of the same name (Becker) in which the titular character played by Ted Danson lived by a mantra of "no expectations, no disappointment." He would repeat that phrase to anyone who was attempting to get him to be more optimistic about something or just life in general, which was against his nature. He would also use the phrase to remind himself to lower his expectations when they were high.
Greg: Hey Luke tell Tom what happened to you last night
Greg: Tom this is the best story you will ever hear man.
Luke: Whoa, Becker your expectations a bit, it's not that good.