Her ass.

To your suprise she pulls you up and sits you on the couch, Planting her heels deep into the cusions of your couch she kisses you on the mouth and bites your lower lip, as she does this you gasp with shock as she arches back and plants herself on your cock deep within her ass, "Unnnggh, yes my ass needs it." her knees fall out to the sides leaving her pussy staring up at you as she falls back, her back bent so far her head nearly brushes the ground, your cock straining at the angle as it digs deeper into her bowels, and crushing your nuts under the strain. She grabs your couch and digs her fingernails in for support as you slam upward to drive yourself in as deep as possible, not sure if you want to please her or hurt her. Rocking like some bizarre erotic circus ride she pumps aginst you as you bang upward pumping her with all your might. Siezing the moment you also begin to finger her eager cunt with one hand and roughly mangle her breasts with the other. Your intensity knows no bounds as you add finger after finger, finally dropping your thumb in you fist this bitch as you pound her ass. This enlicits a litany of screaming and panting from her and you feel her pussy oozing with delight, soon however you cannot take anymore and are about to burst. As you begin to blast her with your cum she lets go of the couch and falls with a thud on her back, your cum showering all over her stomach, tits, and face as she lies below you on the floor. Then to your suprise she stands up for more.