A tampon is a thing that women use during their time of the month to soak up blood.
Talking about tampons can make some people feel uncomfortable, but it's a normal thing for women.
Examples:
She uses a tampon every month.
Tampons are sold in the store.
The tampon is in the bathroom.
I don't want to talk about tampons!
She has a whole bag of tampons in her room.
She always carries a tampon in her bag, just in case.