This is the bowlone smokes to bring himself back down to what is called "public high" after smoking out of an instrument of mass destruction, such as a waterfall bong. This ties in as well with the warm up bowl, the one that gets you ready for the instrument of mass destruction.
"damn, man, I gotta go meet up with my parents"- Guy 1
"no worries man, we'll just cool you off with a warm-down bowl."- Guy 2
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."