go out on the tiles
To go to bars, clubs, parties, etc., and have an enjoyable time, often to the point of excess. Primarily heard in UK, Australia. When I was in university, I would go out on the tiles nearly every night. There's nothing I enjoy more than getting together with my friends on a Friday and going out on the tiles!
a night on the tiles
A night out (often with the suggestion of celebrating and/or partying). Similar to the American phrase "a night on the town." Primarily heard in UK. I am so excited to go out for a night on the tiles after I finish my exams this week.
out on the tiles
slang Having a night of fun and/or celebration, often by going to bars and parties. Primarily heard in UK, Australia. Our team won the big game, so we're definitely going out on the tiles tonight! I'm still recovering from spending Saturday night out on the tiles!