....Uterus wants baby.
Person doesn't have baby.
Uterus wants revenge

My best excuse to getting out of Phys Ed.....

when us ladies bleed out of our vaginas on a monthly basis. it lasts about a week on average and may cause you to sit at an awkward angle when you're in school.
causes horrid cramps for most girls.
when you hang out with people enough, supposedly you all menstruate at the same time. this is when the crime rate goes up in your neighborhood/area.

Something boys complain about but they should not cause they don't have to have the extreme pain for a week a month.

Flawed.

Once a girl reaches puberty, these hormones take over and she starts to have boobs, curves, and becomes more emotional and feminine etc. These hormones also enlarge her hips and uterus. This lining builds up in the uterus and sheds itself every 28 days if she doesn't get knocked up, thus she gets her period.

People tell me, "Well we have periods because we're supposed to have babies!" But even if this were true, I read this study that a woman ovulates 400 eggs in her lifetime. Who could actually have 400 kids? Even in the old days when they had like 12 kids and they only lived to be like 60, a woman would still have more periods and pain than she would kids.

Now it's the 2000s and nobody has 12 kids anymore, some people don't even like or want kids, but we're still stuck with periods and the average age of menarche is declining due to all the calories and stress. As a result, we've suffered too much from periods: we miss school, lose blood, have cramps, waste money buying "feminine hygiene" products, and basically go through a lot more than the guys do.

A monthly cycle every girl goes through, which can sometimes cause, cramps, bloating, fatigue.

The time when blood comes out of a woman's vagina. See fine time cherry drippin. The color can be from bright red to dark. It smells like fish sometimes. Most people assume that when you have your period you are not pregnant, but that is not true because you can be pregnant and still have a period. Also, if you have sex on your period you can also get pregnant too. When your period is about to be over, the discharge turns brown, that is an indication of old blood.