Why do girls have periods and boys don't?

lol, cause we can have babies, and as “princessdadiesgal” said: we have a blood wall that slowly breaks down’it helps for pregnancy, hey, COME ON, you truly don’t know why?!!

well girls cary eggs wich cause them a menstral cycle when the eggs arnt used, its diffrent with guys they have sperm to fertilize a girl boys usally get it around the same time girls get there period age 12/13

Lol, this is just… lol.

common you know the answer your not thatyoung you should no about your body yea when the egg dosnt atach its self to the side of your uteris then it needs to leave your body along with the uterin lining most of that is actually not bloos its the lining that if you were pregnant the baby would use for nutrients

Because girls produce one egg in each month, and when this single (rarery more than one) egg changes the previous one, then it needs some bleedeing. Instead of this, boys continuously produces tiny sperm cells, millions, and that do not need changing in each month.

no offence but your like 18 I would expect this off a 12 yr old sorry but even I no what its for an im 15

No offence to funadvice.. but uhh..sometimes it’s such a joke ;D

because we have a blood wall that slowly breaks down”it helps for pregnancy

boys cant have babys

If you want one im willing you give you mine cuz id love to not have it hah

because boys dont have vaginas or babies…

becouse we boys dont have vaginas

because gurls av pussys

x

I thought its because of Eve the first girl on earth.

Er…because guys dont have the babies??

because boys dont have does 2?Why you as that?Do you want to have a period?

well what do you expect? blood to come out of your c0ck?

wow are you kidding me

Only women bleed

-Alice Cooper