Over the weekend, B.o.B shared plenty of thoughts on Twitter about how he believed the Earth was flat, and now he's doubling down on his stance with a new song on the subject. Not only that, but Bobby Ray is also sending shots on the track at famed scientist Neil deGrasse Tyson, who corrected him on Twitter yesterday. "Neil Tyson needs to loosen up his vest, they probably write that man one hell of a check," B.o.B raps on the song, which is of course titled "Flatline." Throughout the rest of the song, Bobby Ray brings up some of his other conspiracy theories, while he ends it all with a recording of a lecture from Tyson. This is probably the weirdest rap beef of all-time.