Protective Coating

>Joker quivered, leaning back against Yusuko as she continued to pump her hands up and down his cock
>Sweat beaded down his face, his balls aching from her ministrations
>A canvas stood before them, the paint thereon almost entirely coated in his spunk
>"Don't let up now, we're nearly finished" she whispered into his ear
>Her breasts pressed flush against his back, her hands wrapped around his waist as she continued to furiously jerk him off
>"Y-Yusuko, I don't think I can..."
>Her lips curved upwards in a smile, and she pumped her hands even faster
>"If this last shot gets the rest, I shall relinquish my anal virginity the next time we meet"
>She punctuated that with a kiss, turning his head and planting her lips on his open, shocked mouth
>Joker moaned into her mouth as his overworked balls finally clenched and let loose
>A long, thick rope of his cum rocketed out, covering the last bits of the canvas
>He slumped back against her, breaking the kiss and breathing hard
>"Isn't it beautiful?" she remarked with pride
>Joker only groaned in response, and Yusuko helped him over to a nearby chair
>As he sat down, she kneeled between his legs, eyeing up his spent cock
>Grasping his thighs, she leaned forward and gently rubbed her face against his shaft
>"What a perfect addition to my painting tools~"
>She noticed a pearly bead of leftover cum on his cockhead, and gracefully shifted up and wrapped her lips around it
>Her tongue lapped up the bead as she sucked, vacuuming up what remained
>Joker gripped the armrests hard, the sensation of being toyed with almost painful
>Eventually she slowly pulled back, showing him the mouthful she got before gulping it down
>"And what treats it doles out~" she said, smiling
>She then got into his lap, his softening length resting on her silken legs
>He looked up to her
>"Were you serious about that last bit?" he asked
>She cocked her head
>"Of course, it wouldn't be the first time I've given myself to you for the sake of art"