drink thirty 

It's Drink Thirty: (V.) Slang for Happy Hour.
A measurement of time when it is time to party. The phrase "It's Drink Thirty" is similar to the phrase "O Dark Thirty". It is broader than the phrase "It's Five O'clock Somewhere" in that "It's Drink Thirty" implies that it is time to enjoy adult beverages right now!

Hey Mates! It's Drink Thirty, belly up to the bar!

drink thirty by Roberto Marquez May 28, 2008

Drunk-thirty 

The time of night when bars/clubs close and people try to drive home after consuming large amounts of alcohol.

Good luck trying to get a cab in the city at Drunk-thirty. The lines are always busy.

I always get nervous driving during drunk-thirty, people are swerving all over the place.

Drunk-thirty by PDE-aka kev2roc November 28, 2012