Pour thirty
Knocking off work half an hour early (for example, at 4:30) to get a drink. Usually on a Friday, but usable any day of the week.
Co-worker: Hey, did you see the e-mail I just sent?
You: Sorry man, it's pour thirty and I'm ready to get my drink on.
You: Sorry man, it's pour thirty and I'm ready to get my drink on.