Astrophysicist and "Cosmos" host Neil deGrasse Tyson once famously answered the question of who the greatest physicist in history is.

A Reddit user recently discovered that when you slow that video down, Tyson looks ... well, stoned.

You can watch the original video below.

Related on MNN: How much do you know about marijuana? [Quiz]

Proof that Neil deGrasse Tyson can do anything and we'll think it's cool
A Reddit user recently discovered that when you slow down a video of Neil deGrasse Tyson, he sounds like he might be ... well, stoned.