in a previous non bsdm relationship i had, i used to bite him...and he would threaten to slap my face if i did it again, and being my sassy self, i would just bite him harder, thus earning the slap. one ot two slaps per session was all it took. god it used to make me hot.
Yup, same here. We both consent to it. When I get out of hand, one slap is all it takes to put me back in my place. Not too mention how turned on I get from it. Rwawr!
"The very instant that I saw you, did my heart fly to Your service; there resides, To make me slave to it; and for Your sake..."