The lowest and darkest tint you can buy. Next darkest tint you may buy is 5%. 2.5% may or may not be illegal depending on where you live. This tint is also known as limo tint.
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."