A small, bite-sized frozen ham sandwich on a biscuit. Much like today's "white castle" hamburgers; a popular frozen snack food of the late 1960's and 1970's.
"Jimmy, Don't eat that! There is a box of Hamdingers in the freezer!"
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."