Top definition
Someone that is not quite right in the head. Also, someone who is not playing with a full deck.
Jim: Hey John, "What happened between you and Lisa?"

John: "After she told me that she loves me on our 1st date, I determined she was a whack-a-loon and kicked her to the curb."
by bottomline711 November 29, 2010
Get the mug
Get a whack-a-loon mug for your friend Manafort.
Jul 6 Word of the Day
Phrase meaning that a deceased cannot rest in peace until society changes due to the circumstances of a death.
People said rest in power for the unarmed man had been shot by the police.
by FooBarBiz October 12, 2017
Get the merch
Get the Rest in power neck gaiter and mug.