Yeah, he finally sees her down there, it's going to look like old used roast beef.
Yes, the theory that supposedly a wide variety of different penes ruins the æsthetic value of the vulva, but not the same penis every day, certainly seems extremely plausible.
Not to mention the general absurdity of the idea even if it were only one penis. It seems extremely far-fetched to me that human tissue, especially on the outside, would become so influenced by it in how elastic it is. It makes about as much sense as saying that a human cheek would change shape from being stroked.