It's been

It's been.

Inf. a phrase said on leaving a party or other gathering. (A shortening of It's been lovely or some similar expression.) Mary: Well, it's been. We really have to go, though. Andy: So glad you could come over. Bye. Fred: Bye, you guys. See you. Sally: It's been. Really it has. Toodle-oo.
See also: been
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • works for me
  • beck and call
  • (as) sure as eggs (is eggs)
  • a penny for them
  • bye(-bye) for now
  • Bye-bye, for now
  • BBFN
  • great minds
  • great minds think alike
  • be twiddling your thumbs
References in classic literature
Here, take some ale, my boy: it's been drawn for you--it's been drawn for you."
"Well, it's been a doubling so many years, you see," the tailor replied, a little gruffly, "and I think I'd like the money now.
But so far it's been exciting and very challenging.
I wonder what it's been like for you--the Yalie--and Pam--the original Foxy Brown--to work together.
Lately it's been John Edgar Wideman with Philadelphia Fire, Charles Johnson with Middle Passage, and Toni Morrison with Sula, The Bluest Eye, and Beloved.
Even though I can't play my music as loud, it's been great living at their house.
OLIVIER ASSAYAS: It's been a long process, and it's very much connected to my going through a period during the late '80s, early '90s, when three of my friends died from AIDS.
Q: It's been almost exactly twenty-five years now since the coup that toppled the government of Salvador Allende.
Although born and raised in Los Angeles, it's been a long round trip back home for Elder.
My personal net worth, the bulk of it, is in Willis Corroon shares, and it's been that way all my business career.
While Medicare generally drives the private sector when it comes to coverage, it's been the reverse for weight-related health problems, as Medicare has lagged behind in recognizing obesity as an illness, said Mohit Ghose, a spokesman for America's Health Insurance Plans.
It's been so good for me since I moved out to the US.
It's been a very rocky mad, and I'm definitely old and bitter.
HH: It's been a factor in everybody's painting throughout this century, but it's different in different countries.
Adrienne Rich: When you think about almost any other country, any other culture, it's been taken for granted that poets would take part in the government, that they would be sent here and there as ambassadors by the state proudly, that their being poets was part of why they were considered valuable citizens - Yeats in Ireland, Neruda in Chile, St.-John Perse in France.