He wiggled his buttocks uncontrollably back and forth, as much as the restraints would allow. You wanted to relieve him, after all, you wanted him to be rested for tomorrow. But it also turned you on to grope his tender, plump arse with your wet leather gloves. Only when he slowly subsided did you take his cock in your hand and began to jerk him off. He gasped heavily before coming a few seconds later, his semen dripping down in large spurts.