While chatting with host Jimmy Kimmel ahead of the live productions of The Facts of Life and Diff'rent Strokes, Lear was asked for any advice he's picked up over his time on the planet.
"Two little words that we don't think enough about: 'Over' and 'Next.' When something is over, it is -- and you used the word, so I will -- it is f**king over!" Lear said, as the network managed to quickly drop the swear word from broadcast.
"Well, I said that off camera," Kimmel said with a laugh. "But I will say that never before in the history of American television has a 99-year-old person used the f-word. So congratulations! Another feather in your cap!"
It was a wonderfully unintentional way to show just how unpredictable a live event can truly be, adding to the excitement of the night, and kicking the show off with a moment fans loved.
However, the big surprise came with the appearance of some previously unannounced guest stars, including Will Arnett playing Dink Lockwood, and Jason Bateman as Tim Holifield, as well as Jon Stewart (rocking a ridiculously over-the-top orthodontia mouth brace) as Carl Price.
While the star power, and their comedic timing, were a delight, it was their over-the-top wigs that really set the internet on fire.
Jason Bateman's wig alone is worth turning on the live "Facts of Life."
The second celebrated sitcom to get recreated was Diff'rent Strokes, with original star Todd Bridges introducing the production of the season 1 episode "Willis’ Privacy."
Bridges used his intro to pay tribute to his late cast members, including Conrad Bain, Gary Coleman, Dana Plato and Charlotte Rae.
One of the highlights of the production was the perfectly over-the-top Kevin Hart playing Arnold -- the character originally played by Coleman. His uncontainable energy and childlike charisma proved to be flawless, and mirrored the straight-laced performance of Damon Wayans as Willis.
With John Lithgow as Mr. Drummond and Dowd, doing double duty, as Mrs. Garrett, fans had nothing but love for the casting choices. Adding the surprise appearance of Snoop Dogg as Willis' friend Vernon really sent fans over the edge, and left the live studio audience roaring.
As the episode came to an end, the entire cast gathered together on stage as Kimmel shared his thanks, and he ended the night with one more tribute to the legend himself, Norman Lear.
"This is a live show and we were worried that, like, Snoop would curse on the air. And sure enough Norman dropped an f-bomb right at the top of the show," Kimmel quipped, before wishing Lear "another 99 years."