His arm wasn't the only thing the Galra changed. They also gave him certain... needs. Shiro learns to make it work for him.

Eddie briefly recalls some tentacle porn he’d watched just before Venom became a part of him. The copious vines holding her up and entering her every opening simultaneously. Fluids, from her or the monster who could tell, leaking from her mouth and pussy and ass. Oh, Eddie. Venom’s thought shook him, definitely not wanting to take their tongue out his mouth, How’d you keep this from us? Eddie had to be completely honest… he had absolutely no idea how he did either. ~ That good good tentacle fuckin' that Eddie so desperately wanted.

While the Asset is in the middle of an experimentation session with the Chem Sci department, an emergency happens in another lab. One of the other experimental creatures escaped its containment cell and the Asset is ordered to go take care of it. He's hosed off, plugged up, geared up, and sent upstairs post-haste to deal with the problem. Unfortunately, the Asset is still flush with drugs that make him incredibly aroused. When the escaped creature notices, he takes an interest. Much to the Asset's delight.

EDDIE. “Yeah?” STOP TALKING. A buzz of dangerous excitement lights up Eddie’s nervous system like a whole damn Christmas tree, like the hum of a neon sign in the quiet rain, the fear of a lightning strike eclipsed by awe for the subliminal, earthly tremor of thunder’s echo. He smirks, lazy. “Make me.” When Venom purrs, the vibration radiates through his veins, his muscles and bones, his pores, the chambers of his heart, as if a satisfied lion were not merely sitting on his chest but residing in his ribcage.   OR: Venom thinks "me time" is "we time." OR: Does it count as masturbation when your symbiote gets you off? OR: Teaching sex ed to your symbiote.