If you're like us and value your sleep, you probably nodded off into your Ambien dreamland before the party started on post-prime time TV. Don't worry; we've got you covered. Here's the best of what happened last night on late night.

What happens when you get a bunch of comedians to host late night shows on April Fools? So many pranks –– but our favorite of the night had to be Rihanna, who snuck into Jimmy Kimmel's house, staged a mini performance of "Bitch Better Have My Money," and threw dollar bills on him. The best part was learning that Jimmy wears a mouth guard to bed. 'Jimmy Kimmel Live!': Rihanna Pranks Jimmy Kimmel

Rihanna and Jimmy also participated in the New York Collaborates for Autism Twizzler Challenge, which basically consisted of them eating a Twizzler "Lady and the Tramp"-style. Watch your back, Molly McNearney!

Time for another "Kimmel" YouTube challenge! This time, Jimmy asked viewers to say "April Fools!" to their friends as they took a sip of perfectly normal morning coffee. It goes without saying that everyone had a collective freak out.
Over on "The Tonight Show," Jimmy and Pharrell Williams took a walk down memory lane by checking out clips from '80s R&B duo Afro & Deziak. The catch? They filmed said clips live in between breaks from their interview –– which means they had mere seconds in-between costume changes. The results were hilarious –– and also Pharrell needs to spend more time in pink sequins, please.
Looks like Katie Couric loves a good prank almost as much as Rihanna! She pranked "The Late Late Show's" James Corden by falling down the stairs upon entering his sound stage –– but fear not! It was just a stunt double.

Ringo Starr visited "Conan," and while he didn't fall for a prank, he did share some of his personal Beatles-era photos. In the words of Ringo "we had nothing else to do so we just photographed each other."

Finally, Billy Eichner and David Letterman hit the streets of New York and asked people what the host with the most should do post-retirement. Hilarity ensues, as it always does when Billy and David get together.