(1). A term used to describe an overly optimistic person whose double rainbow point of view usually becomes bothersome to upper management, as well as the rest of the office, and is terminated.
(2). See glass half empty.
“I dunno guys, I think that presentation went pretty well! Call me a glass half full kinda guy, but I thought it was actually a good thing when Scott sneezed on the managing partner…showed we were comfortable with them.”