Top Definition
A state of excessive drunkenness resulting from an open bar social event.

When an individual drinks more alcohol, more aggressively simply because it is free.
I was drinking like I had open bar syndrome.

I had open bar syndrome. I puked.
by pants1848 April 26, 2010

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from We'll never spam you.