In my entire life time I've probably heard of one perfect example as to explain to someone what having a period is like. and it's the one that goes like this... Imagine your uterus being a baby room. and it spends so much time getting the baby room ready just to find out that the baby is now not coming. and next thing you know it's destroying the baby room throwing shit everywhere breaking things throwing a fit screaming and you can probably add in whatever you want but to the point that is taking it out on you by making you bleed and making you cramp and making you nauseous or have crazy cravings and I could keep going on but you get it.