Abbreviation:Apes Communication System
If one can't be bothered to talkn talks in sign language.Also used when under distress,eg.acting out murdering something or bashing something with a hammer when disstress or annoyed at a particuler situation.
In the simpsons, when Homer is angry with 'the boy' he chokes 'the boy' this action or similar, minus 'the boy' this is a clear example of A.C.S
a fight or fighting that usually includes happyslapping,puching kicking and children chanting BEEF BEEf
there was BEEF in school 2day