ACS

Ancient Chinese Secret, Information that is confidential.

When asked for the for the secret formula, I replied "ACS"

by McBain February 7, 2002

ACS

Ass Crack Sweat...caused by so much physical exertion that the sweat runs into the crack of you ass causing the cheeks to slide against one another.

Dude, it was so hot outside today I had some ACS brewin.

by Bigdaddy_J January 2, 2009

ACS

ACS is a First Person Combat System Free that was created by @00scorpion00 and @dusek_br along with a bit of limited help from some awesome community members periodically. Our company specializes in providing users with a high quality gun engine which can be used in their awesome creations. Many communities have been using ACS as their first choice, may it be a small community or a large one, we cater to everyone’s needs!

ACS used mostly on ROBLOX STUDIO

by random man that is soo stupid December 2, 2021

ACS

Anglo-Chinese School
Pwnage.

acs is uber. it pwns u.

by fearall March 21, 2005

ACS

Shorthand for "Adios, cocksuckers!"

Alright, I'll catch you guys later. ACS!

by ocelotsixx December 17, 2008

ACS

After Concert Shock
When you get that really high pitched ring in your ears after a concert or listening to your iPod on full blast

Fan 1: "How was AC/DC last night?"
Fan 2: "What? I can't here you I got ACS!"

by headbanger1992 May 29, 2009

ACS

Advanced Competitive Science. A class used to fundraise money ergo the teacher eats the money and calls the students sheep and boneheads. It consistes of making crap out of legos and then having it taken apart by the teacher because it's not fucking crossbraced right.

Stop being a pervert in ACS.

by nato couto mario April 27, 2007