been there, done that, got the T-shirt

been there, done that, got the T-shirt

A jocular, sarcastic, or condescending expression of familiarity and/or boredom with a certain situation or thing. Refers to buying a T-shirt as a souvenir from a tourist destination to prove that one has been there. Oh, you're going to Paris this summer? Been there, done that, got the T-shirt.
See also: been, done
Farlex Dictionary of Idioms.

Been there, done that (got the T-shirt)

and BTDT(GTS)
phr. & comp. abb. I’ve been through all this before. BTDTGTS. I need some other suggestions.
See also: been, done, that
McGraw-Hill's Dictionary of American Slang and Colloquial Expressions
See also:
  • Been there, done that got the T-shirt
  • been there, done that, bought the T-shirt
  • BTDTG(T)TS
  • BTDTGTS
  • Ts
  • BTDTBTTS
  • (I'll) see you in the funny papers
  • (I'll) see you in the funny pages
  • page
  • See you in the funny pages