Because the claim was never based on anatomy. It was based on insecurity looking for a scientific excuse to judge women's choices. The vagina is a muscle. Muscles don't permanently stretch from use. They recover. Basic biology settled this decades ago. The myth survives because it was never really about the body. It was about control.
So I got my period at work today with absolutely no warning and went around asking all the women in the office if anyone had anything and nobody had a single thing.
One of the guys overheard me and said he had pads in his car because he keeps them there for his girlfriend for emergencies.
And then he went out to his car and came back and handed me a pastry bag.
This man had put the pads inside a pastry bag so nobody would know what was in it. To save me the awkwardness of walking through the office visibly carrying pads. He thought about that. On his own.
And it wasn't just one, he gave me two because I had an eight hour shift and he did that math himself apparently.
I was not prepared for......