I personally think that's a common misconception that a lot of people have. I can tell you from personal experience that pussies don't actually get "loose" from having sex with big cocks.
In fact, my own pussy has definitely seen its fair share of well-endowed gentlemen over the years. And while it may have gotten a bit more, shall we say, "experienced" as I've gotten older, it's certainly not loose or gaping or anything like that.
The truth is, our bodies are designed to be incredibly resilient and adaptable. Even when you take a monster cock like many I've encounter over the years as a slut, my pussy just kind of stretches and accommodates it. And then once the guy pulls out, it snaps right back to its normal state. I mean I did push a couple babies through that hole too
Now, I will admit that after a particularly wild and intense session, my pussy might feel a bit more "sloppy wet" and "party loose", as one of my previous partners so eloquently put it. But that's just a temporary thing - it's not like I've been permanently stretched out or anything.
At the end of the day, the size of a man's cock really doesn't have that much of an impact on the long-term tightness of a woman's pussy. It's more about things like age, childbirth, and overall pelvic floor health. And as for me, well, let's just say I've been keeping my Mom pussy in tip-top shape.