If you're the black sheep of your family, this couldn't be more true. As a joke, whenever your parents would regale you and your siblings of the story of when you were all born, they would always go into extreme details with your siblings story and when it was your turn; they'd laugh and laugh about how they picked you from the shop. Or how you were adopted because the stork genuinely brought you to them. It was funny but now you're worried that you're not a part of this family and are questioning your genetics.