by syrianarab May 26, 2005

Noun: Stemming from the slang for "anti-aircraft" - A person who shoots another person's idea, thought, or feeling down.
Person 1: "How about Joe's Bar tonight?"
Person 2: "How about no?"
Person 1: "You, sir, are an Ack-ack..."
Person 2: "How about no?"
Person 1: "You, sir, are an Ack-ack..."
by DRoseMVP1235 May 26, 2011

The laugh of DarksydePhil.
by Falchion315 April 22, 2019

by Martian Ambassador August 02, 2017

by Longathon Eggbert September 06, 2018

inconspicuous nickname for marijuana, esp. when used with parents/police present. Can also be used as a verb (See example below)
N.)- Yo lets go get some of that dank ack ack from that kid down the street.
V.)- Im gonna go take a cruise and ack it up if you wanna come.
V.)- Im gonna go take a cruise and ack it up if you wanna come.
by ThaStonedGecko January 28, 2007

by I'll eat your lamp shade August 24, 2020
