The state one reaches after consuming just enough alcohol too be 'just drunk enough'. The ideal 'butterzone' is being one drink away from the alcohol having any negative effect. For example, puking, blacking out, or really bad hangovers.
Guy: Want another drink?
Me: Not yet, I'm riding in the butterzone and don't wanna fall out.
When a computer goes faster and faster until it's thought processes become a loop and in the infinite moment before it crashes it becomes self aware, that, my friend, is the butterzone. When Keanu comes back to life in the first Matrix movie, and everything slows down and the bullets stop, that is the butterzone.
Nickname given to bales of marijuana thrown overboard or out of airplanes. Origin is reportedly from members of the US Coast Guard in the area of Southern Florida.
"Base we've got some square groupers floating outside of Miami harbor."