Definition

Piss: - Urine; to urinate - Alcohol (especially beer); heavy drinking - In idioms, conveys mockery, rude dismissal, intoxication, or annoyance

Examples

"Hang on, I’ve gotta have a piss before we hit the road."

"We went on the piss after the footy and didn’t roll in till sunrise."

"Are you taking the piss, mate?"