I remember a few months back, almost a year ago I read a users comment about her and her younger brother:

 

She, roughly 12 years old, and her little brother, 3 years old, were playing in the play room and out of no where the boy says to his sister “I was in mommy’s tummy twice.” She looked at him and shrugged it off because that’s a random thing to say, but then he goes on to say “the first time, I wasn’t there for long. I was sick. They came and said I had to leave mommy, I told them no, that I like it here. They said I had to go now, but that I could come back.” “Then The second time was much better, I wasn’t sick anymore.”

 

The sister just lets him continue playing as she goes to her mom and repeats the story and her mom starts to cry. Their mother had a miscarriage a few months before getting pregnant with the brother.