There’s only one way you could know that for certain and that’s if you’ve only ever had sex with like 1-2 women and married them. That’s borderline gay, mate.
I confess that I am having difficulties following your logic, but I am prepared to bow to your experience.
You could have went home with a slapper back in your pomp and she’s let you slot her pigeon after failing to dump your goop in her hoop, we all get that problem mate, anyway I digress, you ****ed the pet pigeon... few months later out pops Matthew. Dad.
Come to think of it, I do remember getting off with a bird called Beaky, at a club in Swansea, a few years back. I ruffled a lot of feathers, back then.
