ABS and Nipples BDSM Training

Description: This video is the realization of a fantasy of one of my subscribers who explained to me in detail what he wanted to see:the purpose was to test the resistance of my abs under different tests, with the particularity that my nipples had to be tied to the big toes of my feet with a pulley, creating a triangle, so that i could not rest by loosening the tension on the muscles by lowering my legs, or the wires would have pulled my nipples more and more.so i find myself first on some unstable ballerina-boots and i am prepared with a series of whips on my firm and muscular bottom.these already make me warm.then i am laid on a wooden table, my breasts are exposed, my ankles and wrists are tied and two strings are tied to my nipples and toes!to be safe, clamps should be used, but my master today is harder than usual and decides to tie my nipples with a knot.i find myself with tense abs and if i try to lower my legs the strings tighten preventing me from releasing the tension!after 20/30 seconds, i start to think i can't do it because the effort required is high and the isometric position is really difficult to maintain; as soon as i relax for a moment because my abs start to tremble, the strings pull and stretch my nipples in a worrying and painful way while the knot tightens stopping the circulation and making the nipple super sensitive.i concentrate and maintain the position releasing the tension, but my master who is particularly sadistic today, starts hitting my abs with bursts of punches!i exhale with each blow, i concentrate on contracting my abdominal bands to the maximum, i will not give him the satisfaction of pronouncing the safe word.since i do not give in, he starts to stimulate my pussy, which is already all wet. .. the rest of the desc in the comment.