"Natural Born Kissers" is the twenty-fifth and final episode of the ninth season of the American animated television series The Simpsons. It originally aired on Fox in the United States on May 17, 1998. Homer and Marge discover that the fear of getting caught while making love is a turn on and start making love in public places. It was the first episode to be written by Matt Selman and was also the first and only The Simpsons episode to be directed by Klay Hall.
Matt Groening listed the episode as being his eighth favorite, The episode was the only time that show runner Mike Scully ever got a call from 20th Century Fox where they suggested not doing the episode. They were worried about the sexual content, the nudity, and how it was going to be handled. They disliked several of the phrases used in the episode, such as the term "ass forkin.
The producers fought the censors and in the end, very little of the script was modified. Homer finds a flyer from Frank Grimes's funeral.
Matt Groening listed the episode as being his eighth favorite episode, The authors of the book I Can't Believe It's a Bigger and Better Updated Unofficial Simpsons Guide, Warren Martyn and Adrian Wood, wrote, "a superb episode which actually makes Marge and Homer's love life seem very real; everyone needs a bit of spice now and again, and they find theirs. The balloon trip is hysterical, and the attempts to explain their <!--This is a quote, please do not change this-->behaviour<!--This is a quote, please do not change this--> to a very worldly-wise Bart and Lisa are magnificent." The DVD release was also reviewed favorably by Louis R. Carlozo in the Chicago Tribune, where the episode was seen as "more ridiculous" than "Large Marge".
In the last of The A.V. Club<nowiki/>'s "Classic Simpsons" recaps, Les Chappell writes that the episode is a fitting conclusion to the show's ninth season: "It's a great encapsulation of how this family works: Homer and Marge have to try to explain things to children who are too worldly to fall for most excuses, the explanation trails off, and what could be a pleasant family outing to solve it all turns out to be yet another excuse for self-involvement when one public humiliation doesn't outweigh the joys of getting busy in a windmill. The Simpsons are a weird, dysfunctional, and ultimately loving family, and this is an ending—and an episode—that reminds us how wonderful that can be."