B.o.B spent his weekend making sure his fans understood that their elementary school science books have been lying to them. The Atlanta rap star shared his belief that the government is lying about the earth being round.

That's right--B.o.B believes the world is flat. Take that, Magellan.

Apparently, the guy who wrote "Airplanes" has some questions regarding the curviture of the earth and how it disproves this whole "world being around" thing.

"No matter how high in elevation you are... the horizon is always eye level ... sorry cadets... I didn't wanna believe it either," B.o.B tweeted Sunday. He also shared his theory that cities in the distance would not be visible if the Earth was really curving.

Rappers and conspiracy theories go together like peanut butter and jelly, so Bobby Ray's fixation on "the truth" about the curvature of the earth shouldn't come as too big a surprise; but it's safe to say he didn't expect one of the world's most brilliant scientific minds to come for him directly on Twitter.

After B.o.B's harangue about the flatness of our homeworld, Neil deGrasse-Tyson hit up the hip-hop star to point out the flaws in his theories.

 

 

And deGrasse-Tyson with the not-so-subtle shade! Of course, the renowned astrophysicist lives for moments where he gets to rain on the less-informed's parade; but B.o.B is opting to dismiss a few centuries of pretty hard scientific evidence, research and common sense. But give the guy points for commitment.

Check out B.o.B's Neil deGrasse-Tyson diss, "Flatline:"