The chance to poop as loud as you want. It can refer to the moment when you are finally alone in a public restroom. It can also be used to refer to happening upon an outhouse on a hiking trip or a gas station on a road trip.
When my boss flushed the toilet in the stallnext to me, I knew it was my only window of poopertunity.
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."