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An expression used to say that one has been in the situation or experienced that which another is talking about. It is usually a negative scenario that is being discussed.
1: Damn, I forgot my homework at my house!
2: Been there, done that.
by JoMan112 January 27, 2011
that is nothing new to me, tell me something else
Person 1: Remeber, you have a reputation to uphold.

Person 2 been there, done that.
by Light Joker June 02, 2006
A way to say "it's not interesting to me, lets just skip this topic" or "I already know this".
- Hey, did you know the US soldiers have gone to Iraq?
- Been there, done that.
by liththth October 07, 2006