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Giddy up! Matt rides Jim Carrey like a horse

Matt saddled up this morning and jumped onto the back of a crawling Jim Carrey, riding him like a horse throughout Studio 1A. 

"I can't believe I rode Jim Carrey," Matt joked later in the broadcast. 

Watch the hilarious video here:

And that wasn't the only Carrey-related chaos this morning. He crashed Natalie's newscast -- and then offered her a flower -- causing her to be slightly "embarrassed." 

Watch that video here:


And he did all of these antics before his interview with Ann! Check out the complete conversation below, in which Jim talks about his movie, "Mr. Popper's Penguins" and weighs in on Rep. Anthony Weiner.

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