Ack! is a meme spammed across 4chan boards, participially /tv/ and /pol/. The earliest known use of the meme was on September 8, 2021 by an anonymous user (who, in this case, was the OP of the thread) on /tv/. The thread depicted a GIF of a trans woman, who barely looked like a woman, hanging herself in hellfire. The description simply read “ACK!”. Variations of the meme include /pol/ack and yellow dog (who is meant to symbolize a mod).
by Cosmic Lugger January 16, 2022
Get the ACK! mug.
The basic blocks of the Martian language from Mars Attacks.
"ACK ACK ACK, ACK! ACK ACK ACK ACK! ACK." - Martian Ambassador
by Martian Ambassador August 1, 2017
Get the ack ack ack mug.
-Anti air flak, term used in World War I.
Ack-ack downed more planes than dogfights during the First World War.
by syrianarab May 24, 2005
Get the ack-ack mug.
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..."
by DRoseMVP1235 May 3, 2011
Get the ack-ack mug.
When an individual experiences an anal prolapse, and another proceeds to choke on it.
by Longathon Eggbert September 6, 2018
Get the Ack ack mug.
Hawaiian slang term.

Definition 1: Stop showing off.

Definition 2: Stop behaving like that.
1)Guy 1: I can drive mo faster den you! Guy 2: No ack brah!

2)No ack lydat.
by mynameisdakine May 30, 2005
Get the no ack mug.