In bed are a boy and a girl, a girl reading a book:

He: Can we have sex?
She: No
He: Can you prepare something to eat?
She: No
Do you want to get rid of your book?
She: No
He (a little quieter): Can I buy you a collar?
She is: No. It is fucking! Yes!
He is X*Y to you, not the collar, the serpent.