Because It Was Bound to Happen, Neil deGrasse Tyson Responded to B.o.B. About the Flat Earth Thing
He even took time to explain the science behind a few examples of 'proof' of a flat Earth and why they are so, so wrong.
UPDATE to the update, B.o.B. has just released a song aimed directly at Neil deGrasse Tyson and all about the flatness of Earth. NSFW Warning: This song contains a few words that are not appropriate for the scientific community.