Two college freshmen met and became friends at Tulane University before discovering that they're half-sisters through a common sperm-donor father. The 18 and 19-year-old girls were both from California, and first made contact when they were searching on Facebook for possible roommates. They later became fast friends when they met in person on the New Orleans campus and figured out that they were conceived by a donation from an anonymous donor. Neither thought much of it, even when they figured out that both of their donors were Colombian. However, after one of the girl's mother saw a photo of the other girl, she asked about her sperm donor's number and found out that they share a father.
Do you have a story so crazy that no one believes you when you tell it?