Screw it. You can't stop at this point; you've already touched yourself, and now it's like your hand has been magnetized...it just keeps moving to grip your dick again.
Eric picks up the dildo-remains of Jung and Leon, turning around to see you going at it. "Oh, man, you weren't supposed to touch it!" he says.
"Just...couldn't...help...it..." you try to answer, but the latex is up over your nose now, and while your mouth moves, nothing comes out. It's not like it really matters...the only thing that really matters is
BOOM! You cum inside your own cock, the rigid pole momentarily puffing up under the tension of the cum, or whatever it was your balls are pumping out now. It feels...you can't think of the words. You can't think of anything, just cumming, and cumming, and cumming again. The feeling isn't even concentrated in your dick anymore, but has spread to your entire body. Your arms fall to your sides, and you don't even need to touch yourself anymore to cum, but your hips are bucking anyway. You can't feel your legs anymore, and soon enough your arms are numb, too. No...not numb, just...not there.
Eric sighs. "Well...looks like it's got ya. Might as well enjoy it, buddy." He drops to one knee, trying not to jerk it himself. Perhaps as the next best thing, he reaches out instead and you can feel his fingers squeak along your body, leaving tracers of tingly pleasure behind.
You open your eyes in time to see the world take on a blue haze as the latex crawls up and over them. You've fallen onto your back, and Eric is looming over you, his giant green body towering like a redwood even as you can feel yours pulling into itself, shrinking down into the sex toy you're becoming. Your arms have melded into your sides, your legs are round nubs and rapidly shrinking, and your cock is now most of your lower half.
Thoughts of the future, fear of not getting off the island, even the kinky pleasure of feeling up your rubbery self, all are evaporating. You can't see, hear, or smell anything, not that you care. If you tried, you wouldn't even be able to remember your name, all lost in a blue haze. Your sense of time, self, all gone, reduced to nothing but mindless animal pleasure, which itself even fades as your transformation ends, leaving Eric with a third toy, and your fate in his hands...