Definition

Extremely intoxicated on cocaine to the point of talking incessantly, oversharing embarrassing secrets, and generally making a fool of yourself. The kind of high that leaves you mortified the next day.

Example Usage

I can't believe he got yacked out at the office party and told everyone about his therapy sessions.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=yacked%20out&defid=1801005)