B.o.B Slams Neil deGrasse Tyson In New Song "Flatline"

Next he's going to tell you the moon's made out of green cheese.

B.o.B, the ill-informed rapper who blatantly argued that the Earth is flat, is doubling down on his lunacy — by calling out one of the greatest astrophysicists of our generation.

The hip-hop star slammed celebrity scientist Neil deGrasse Tyson in a new diss track, "Flatline" — which he released on Monday just hours after Tyson tried to explain to him why the planet is, in fact, round.

"In a room full of pigs, trying not to bust a sweat," B.o.B raps in the song. "Neil Tyson need to loosen up his vest."

B.o.B began an online brouhaha on Sunday when he shockingly contended that the Earth was flat in a brazen Twitter rant.

"A lot of people are turned off by the phrase 'flat earth,'" he wrote. "But there's no way u can see all the evidence and not know ... grow up."

He then proceeded to share a series of tweets pleading his case, including one questioning why New York City's skyline is visible 60 miles away.

This caught the attention of Tyson, who generously replied with some context.

"Earth's curve indeed blocks 150 ft of Manhattan," he wrote. "But most buildings in midtown are waaay taller than that."

But Tyson's answer wasn't good enough for the rapper, who appeared to reference the scientist's tweet in the new song.

"I'm over here on this side of town. Come on over, over, over, over try to clown," he rapped.

B.o.B also appears to try to to make Tyson look dumb in the shocking song by sampling an out-of-context portion of a Tyson lecture, in which the astrophysicist stumbles over his words as he discusses Earth's formation.

"Because we...Earth we know it spins, once uh...a day," Tyson says. "Yes thank you. Three people know, uh, how long a day lasts here."

The rapper did admit, however, that he may have had some herbal influence during the time of his rant when he tweeted on Monday that he wasn't "doing anything stronger than weed."

But he swears he isn't "crazy," even as he continued to accuse some of the world's most brilliant minds of being wrong about Earth's layout for hundreds of years.

"I'm going up against the greatest liars in history," he tweeted. "You've been tremendously deceived."

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