The sack must suffer

Nicely fixed on the gynchair, I will devote myself extensively to the slave sack and it has to withstand a lot for me. He is heavily kneaded, massaged hard, worked with the whip, tied tightly, snapped with my fingers and gets blows S with his hand, he is already so horny and is about to squirt which the slave has to hold back but expressly has to hold back.