2. KKKFC!
The Theory Finger lickin' poultry fan and entrepreneur, Colonel Sanders, may have been Southern, but he was no gentleman. Since the earliest days of his Kentucky Fried Chicken franchise going into business, the deeply racist Colonel had been selling a secret recipe blend of herbs and spices that contained a genetically modified chemical that made only black men infertile so as to decrease the black population.
The Proof Colonel Sanders allegedly left 10% of his estate to the Klu Klux Klan. And that's all the proof needed for this rumour, it would seem.
The Truth How Sanders' estate never tracked down the pinhead responsible for propagating this rumour and sued the pants of them defies belief, as much as the theory defies logic. Aside from preying on the deeply offensive racist stereotype that all African-Americans love fried chicken, there is absolutely no proof whatsoever that Sanders was ever affiliated with, or left money to the Clan. Furthermore, if there's a way of genetically modifying chicken to remove people from the gene pool, I'd start with whomever repeats this sort of bunkum.