An activity involving matches being simultaneously flicked and lit. The matches are held likepaper footballs against the striker on the matchbox. The middle or fore finger is then used to flick the match. This causes the match to be lit before flying off the box. Often played as a game with friends.
Never go dillywacking in the woods. You could start forest fires. Also, be careful not to dillywack into someone's hair.
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."