What is Foac?
1.
An abbreviation for "Fall Off A Cliff".
used similarly to
1. OMG, i hate my life.
2. Go FOAC!
See
2.
An abbreviation for Fingernails On A Chalkboard.
Used to describe a person's general singing or instrumental performance in a negative manner.
OMG her singing was FOAC I am NEVER going to her performance again!