on the tiles
slang Engaged in a wild or rowdy celebration, often by drinking alcohol at bars or parties until the early hours of the morning. Primarily heard in UK, Australia. I'm still recovering from a heavy night on the tiles!
on the tiles
away from home having a wild or enjoyable time and not returning until late in the evening or early in the morning. informal, chiefly British The image here is of a cat out on the rooftops at night. The expression has been in use since the late 19th century.