1) a bar where the drinks are free
2) something that troy does not have at his wedding
1) man, I'm drunk. Thank you open bar
2) man, I'm sober. Wish there was an open bar
by Matt Hemlepp February 2, 2003
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