been there, done that used to express past experience of or familiarity with something. informal

☞ This is often used as a flippant expression of boredom or world-weariness. A late 20th-century elaboration parodies the blasé tourist's attitude to experience: been there, done that, got the T-shirt.

2000New Yorker He liked the idea of space-based interceptors but couldn't see the purpose of a new treaty that would once again give Russia a veto over our defenses. 'Been there, done that,' Cooper says.