Tits.

"Tits!" you exclaim, pushing yourself up into a sitting position. Yumiko stares at you with a playful smile while she furiously strokes your shaft. After a few minutes of intense rubbing, Yumiko senses that you are about to climax so she points the tip of your cock towards her chest.

"Fuuuuck!" you groan as the first gob of semen splashes on her right breast. Yumiko giggles as she tries to control your raging one-eyed monster, spurting what feels like an endless torrent of sticky cum on her tits. She rubs your semi-flaccid cock and squeezes your balls, trying to milk you of any more sperm that you can produce.

"Very nice!" she says, impressed with how much jizz you had managed to coat her chest with. "Shower?"

You realize that the handjob was not enough and regret that you should have gotten at least a blowjob instead. Looking down your cock that is still a bit stiff and not completely deflated, you calculate that you have $205 left over for another round with Yumiko and groceries for the week. Checking the clock on your cellphone you realize you see that you still have forty minutes left in your hour-long session.