A cackersnacker is someone who likes to give fellacio (blowjobs) at random times of the day, like eating a snack if hungry at random times of the day. The 'cacker' in the term meaning cock, and 'snacker' meaning person who snacks.
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.