Ack

To ninja vanish without a trace.

Don’t pull an ack.

by Don044 September 21, 2021

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Ack

A server where ppl just fuck and kos with thigh high socks and some chads in farmer clothing and pitchfork are the coolest

This is Ack

by Smug Russian Weeb June 11, 2021

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ACK

The sound a man (Penis) makes when they fall to the ground with their neck hanging on a rope.

Man : I am an abomination, i.. i couldn't pass, i guess this is it *Jumps
Man : ACK ! (Neck break)

by Howertzizz 112 December 25, 2021

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Short for “Acknowledged.” Mostly used by military personnel to quickly confirm that they received the sender’s note, email, task, order or request.

“Ack” can also mean “Yes; Ok; Got it; I’m on it; or Confirmed.”

Cpl Smith,

Please follow up with the Chief Engineer to make sure he has everything he requested from our team.

Col T. Taylor

Reply from Cpl S. Smith:

Sir,

Ack.

Cpl S. Smith

by Imakethewordswork April 14, 2021

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No Ack

Associated with bad behavior

Definition #1 Don't act like that

Definition #2 stop trying to show out

People like to drive on the backside of Haleakala /Hana... Roads are one lane, gravel and drop off into the ocean at points... It is the locals way of getting out into the city.. So it is seen as disrespectful and dangerous... Thus discouraged

Someone hacked the computerized road closed sign to say:

Stay Out Fakas
No Ack

by ShortyWC May 24, 2023

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Ack knot

Any person with a bun or top knot ponytail to be used as a handle to forcibly drive your penial area down their throat until they ack , ack, ack, ack......

I grab Jason mamoa's ack knot ,he opened his mouth and I entered and he went ack, ack ,ack .

by Footlong giver March 12, 2023

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