“NBC Nightly News” anchor Brian Williams is being accused of embellishing his stories. But on Monday night’s “Daily Show,” Jon Stewart said he knows what’s really going on.

“We got us a case here of infotainment confusion syndrome. It occurs when the celebrity cortex gets its wires crossed with the medulla anchordala,” Stewart said, and then used examples to illustrate the difference.

When Williams is looking right at the camera, his medulla anchordala is active and he’s telling a news story.

But when his head is turned, as it was on his now-infamous Letterman appearance, the celeb-rellum activates.

“That’s known as the brain’s applause center,” Stewart said. “Once that engages, there’s no going back — you’re in full-blown anecdote mode.”

So what punishment should Williams face?

“Like with most cases of masturbation, typically, being caught is punishment enough,” Stewart said. “Self-love can be a bad habit. Probably shouldn’t do it at your work desk.”

But Stewart’s harshest words weren’t aimed at Williams. They were directed at the rest of the media, including many of the reporters now going after the anchor.

Check out the clip above to find out why.