I am a Master.  I own a slave.  She is my wife, my property, an animal whom I control.  Her only choices are to obey and be rewarded, or disobey and be punished.  Her focus is my pleasure, her purpose is service.

Tonight I will fuck my slave's ass...the hole that belongs to me, exists for my cock.  She will bend over the bed with a vibrator on her pussy...she will remain like this for as long as I wish, feeling the pleasure.  And I will come from behind, and shove my cock in her ass.  I will cum.  She may not, it makes no difference.