A Work Wank
A work wank is when you get off at work because you're either too tired, too drunk, or too busy being a total prick to your boss to do anything else.
I had a work wank because my boss was a total prick and I didn’t want to deal with him.
I had a work wank because I drank too much coffee and it was the only thing that made me feel better.
I had a work wank because I was so hungover I didn’t want to face my boss again.