Copping the wave means you have found an event or gathering for you and your homies to go to usually involving drugs/alcohol to get "wavy" hence copping the wave
Yo bruh I coppedthe wave for tonight Lamar is having a party it's going to get lit
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."