An acronym for " Gang Bang
Day", GBD is a term used to describe a busy or full
day where there is one
thing right after another, nonstop.
Person1: Man, I had the busiest day: I worked a full shift, went bike riding right after
work, then had just enough time to
shower quickly and catch a movie with friends all before getting a late dinner.
Person2: Wow, sounds
like a GBD to me.