Do you mean: "Why does a brother and a sister want to have a baby together"?.. If that is the case, the answer is that it is very uncommon and in most countries illegal.
sisters bother oldder sister all the time because theyy want to be like u.s
I hope you don't mind if I bother you with a quick question.
i don't know why you even bother.It's no bother, I like to help.Don't bother talking to me.
maybe they want to get to now you
because he doesnt want you to fell bad. because he doesnt want you to fell bad.
because pancakes
because they are scavengers and want ur food
because they want to be like them.
yes all sisters are very annoying! sisters just want you to get angry so they can laugh at you
they are sisters and i want a 3some 4 my bday
girls want to have a baby for having fun
Becuase there mom do't want them to get lonely so they have sisters and/or brothers!