Elon Musk is known for founding automaker Tesla and Space Exploration Technologies Corp. (SpaceX), but recently he has set up the Flat Earth Society for such a burn, it could be his greatest achievement yet.

The flat earth believers are either the biggest conspiracy theory, making total fun of everyone else or they are slightly cuckoo in seriously debating the shape of the earth. The Flat-Earthers supposedly believe Earth is a flat disc and everything that suggests otherwise is a conspiracy, created by NASA and other government agencies. On Tuesday, the billionaire investor, engineer, and inventor Elon Musk asked them a somewhat philosophical question on Twitter, wondering why there isn’t a Flat Mars Society. To his and everybody else’s surprise (and amusement), the official Twitter account of the Flat Earth Society responded. Scroll down to read the hilarious exchange between Musk and the flat earth conspiracy believers!

More info: Twitter (h/t cheezburger)

The founder of Tesla and SpaceX is working hard to make a human colony on Mars a reality, so he was interested in what the Flat-Earthers think of the Red Planet

To his and everybody else’s surprise (and amusement), the official Twitter account of the Flat Earth Society responded

Their answer, however, seems to contrast with all of their beliefs and it sparked a hilarious debate

Elon was probably as confused as the Internet