Tonight, Jon Stewart visited David Letterman on the Late Show, and the two had quite the hilarious discussion about Oprah Winfrey. During the chat, Letterman revealed that Winfrey "hated" him "long before" the Academy Awards incident—and then explained why.

Here's video of Letterman and Stewart's entire chat about Winfrey, and—trust me—it's worth watching all the way through. If you're only interested in the "Why did she hate him so much?" part, though, fast forward to about two minutes in.

[There was a video here]

So, you mean to tell me that Winfrey's ire for Letterman stemmed from a dine and ditch? As the Queen of Daytime would say herself, that's AAAAAAAMMMMAAAAAAAZZZZINNNGGGGGGGGG!

[Late Show with David Letterman]