Jonathan pushes down roughly on Grace's shoulders, forcing her to her knees. She winces as her knees hit the cold steel of the landing. She hears that familiar unzipping sound. His hands wind in her hair as he hisses, "Suck it, my pretty little slut." With that he forces his already hard cock into her mouth and slams it into the back of her throat, causing her to gag. She closes her lips around it and begins to suck, as his hips rock. His hands push her head back and forth on his cock at the same time. With each slam into her mouth, he grunts and groans until he cums deep in her throat.