“Do you really think you need another upgrade on your cock? You’ve already had two and it’s so big I can barely take it up my ass without passing out,” she said.

“You’ll get used to it. Bob’s girlfriend takes his 20 incher up her ass every night and she’s happy to pass out while he destroys her ass. Are you telling me you don’t want me to fuck you into a drooling, whimpering, passed out mess every night?”

“No. You’re right. I’m just being stupid. It’s your cock and you can get it enhanced as much as you like. And my asshole is yours to use anyway you like, which includes shoving as big a cock as you want up it.”

“That’s a good slut.”

(PS - Lab grown penises on humans are soon to be a real thing. While the engineered, ever-hard, cosmetic penis might be a little ways off, I bet it’ll happen sooner than people expect.)