My Family, Series 4 (2003)

Susan:
What happened?

Ben:
I'd just rather not talk about it right now.

Susan:
Okay. Good night.

Ben:
Susan, I very nearly had sexual intercourse with your mother.

Susan:
What?

Ben:
I didn't know she was there. I thought it was you.

Susan:
Oh... Ben, that's... that's... that's terrible! (begins laughing) And funny at the same time.

Ben:
It is not funny!

Susan:
Oh, come on, it's a little bit funny.

Ben:
Susan, I– we very nearly became a Greek tragedy!

Susan:
Look, look, I don't want her here any more than you do, but she's in great pain and can't move.

Ben:
Are you sure she's not faking it?

Susan:
I don't know, you tell me. (begins laughing again)