There is absolutely no stigma attached to them
Really? What world do you live in? Stigma may be the wrong word; taboo may be better. Seriously read the article I linked above.
Kat Lazo, who runs TheeKatsMeoww You Tube channel, also speaks about the portrayal of periods in the media, arguing that men make jokes on film and TV about something that they don’t experience, “and that’s why they’re so inaccurate,” she says.
“Majority of media are made by men,” she tells me, “and like most things, men are misrepresenting periods. Men are writing about and depicting periods from a third-person point of view; an uneducated one at that. Periods are either a comedic punchline or a horror show. Theres a huge stigma associated with periods, and men are only perpetuating it.”
She cites Movie 43 and Superbad, where a girl starts bleeding and the boys see it and freak out, as just two examples of a girl being the butt of the joke.