Only You Know and I Know

Edna, darling. There's something I need to tell you.
What's that, Stanley?
Well, edna. It's 20 years now, we've been together.
Yes, Stanley. S wonderful 20 years.
But I have to tell you. It's time for me to leave.
What!? What do you mean?
I mean, I've been recalled.
What?
There's a new model, and I'm replaced.
A new. . .
You'll like the new one. He's much better.
New one?
Yes, the next android, model 51.
But. . . you're. . . human! I mean. . .
No, actually I'm not. But then, neither are you.
What? Of course I am!
I told them, either I get a new model, or I'm gone.
But how. . .
So, model 51 has been shipped. and I'm out of here.
But. . .
They told me I'll get the update of you, Edna v.78.
What version am I?
Oh, you're a 72 or something. Can't even get parts.
Parts? Why didn't I know this?
No self-awareness in the 72. Sucks, doesn't it.
So you're trading me in. I can't believe it.
Yep. For a younger model.
Men! You're all alike.
Well, we call ourselves Drabhoovies on Arcturus.
And you call women. . .?
Oh. bitches.Same as here.
Shoulda known.