Well, I surely know my slave hates spitting - but I want him to love my spit! I keep him on a leash, bind his hands behind his back and push him on the couch. Then I get on his chest, make him open his mouth and spit into it again and again! Every time he dares to close his mouth I make him open it again right away - but I miss his mouth a few times any way - no problem - in the end I rub all the spit that missed his mouth all over his face with my crop ;-)