被鞭打在树上

I am a sadist through and through. I tie my slave to a tree in the forest. He better pray that no passers-by see him like that... and that he is up to my hard hand! I get out my whip and play with him. He screams and whimpers and stops me but there is no escape! I'm going to go wild on your back now, slave, so hold still so that I can whip you!