Girl stuff?
Answers: the one you pee out of...Tampon boxes hold directions on them, to show you different ways to insert, and how to tell if it's surrounded by the right spot.
May sound funny to those who know...but clear sure you remove the applicator. Only the cotton/filling stays inside.
EDIT: Any "informed" person know the urethra is inside the vagina. How many younger ones know that? They purely know pee comes out of one, and crap out of the other. I guarantee if you try to stick something in the urethra...you WON'T do it again.
your vagina The one closes to the uterus.
Don't listen to the individual who said the one you pee out of! It's the one that is the hole closest to your anus. It's aft the hole you pee out of and it is the largest one. Not sure of the correct names but inside your pussy are two holes. A small one you pee from the other is farther put money on. Instruction come with the tampons usuall next to a diagram. When all else fail read the directions.