A man walks into a bar and announces that he is a sadist. "I enjoy inflicting pain on others!" he proclaimed.
At the bar another man looked interested, "I'm a masochist and I enjoy having pain inflicted on me." He replied and the two of them went back to the sadist's flat.
The masochist now chained to the wall and stripped to the waist was quivering in excitement as the sadist slowly twisted the leather whip in his hand with it's distinctive noise.
"aren't going to hit me now?" the masochist asked with tears in his eyes waiting for the first hit. But the sadist leaned in close and whispered in his ear. "No." he said and left for another bar.
Moral of the story?
It's just a joke