evidence: No, McDonald’s french fries don’t all come from potatoes grown on Bill Gates’ farms [...] "In case you didn’t know every single McDonald’s french fry comes exclusively from potatoes grown on Bill Gates-owned farmland," the text in the July 8 Facebook photo reads. The caption said, "Reasons why you should never put a McDonald’s French Fry in your mouth again." [...] Like those, this claim is untrue. We rate the claim that "every single McDonald’s french fry comes exclusively from potatoes grown on Bill Gates-owned farmland" False.