This ABC Sitcom Aired Full-Frontal Nudity - And Nobody Noticed

"Welcome Back, Kotter" was a staple on ABC for much of its four-season run, and accidentally included some full-frontal nudity. Popular with kids and teenagers, the talented "Welcome Back, Kotter" cast was notable for bringing big screen star John Travolta to national attention and turning him into a teen heartthrob. The sitcom is otherwise laden with good-natured wisecracks and Marx Brothers jokes, dealing with a group of underachievers who start to thrive thanks to Gabe Kotter's (Gabe Kaplan) nurturing. 

It also features full-frontal nudity for a small chunk of its pilot — and viewers can take a gander at it in every single available cut of the episode. In "Welcome Back" — which aired as the show's 3rd episode — keep an eye on the bottom left corner of the screen when Gabe enters the room and introduces himself to the Sweathogs for the first time at 3:45. Two of his students are seen eyeballing the centerfold of a magazine, where a woman is shown completely nude until the show cuts away to a medium shot of Kaplan at 3:52. We've included a censored screenshot of the image below.

It's possible that the pilot wasn't meant to be seen by audiences, as many test versions of sitcoms never make it to the airwaves after being picked up by the networks. But air it did. Surprisingly, this bit of ribaldry never tripped ABC's censors and has largely gone unnoticed during the show's long history in syndication, its DVD release, and its time on Nick at Nite and TV Land. But thanks to the show's archival on streaming websites like Tubi, viewers can pause and replay to their heart's content. While this revelation might be shocking to the average viewer, "Welcome Back, Kotter" was never a shrinking violet when it came to its subject matter.

While the show was largely marketed to children and teenagers, "Welcome Back, Kotter" dealt with a wide variety of mature topics and social issues during its run. There are episodes covering things like teen pregnancy, teen marriage, the effects of smoking, journalistic ethics, and sexism. It was a show that never shied away from portraying the dire results of its characters' poverty, even though it did so with a sense of humor. Even if some of its actors hated working on the show, they still managed to make a big impact on audiences.

Several episodes dealt with censorship. Ironically, one Season 4 offering deals with moral outrage related to pornography. On "X-Rated Education," Carvelli (Charles Fleischer) obtains a stag film and plans to show it to his classmates. Meanwhile, Gabe's wife, Julie (Marcia Strassman), plans to combat parents protesting sex education at James Buchanan High with an educational film. The movies get accidentally switched and Julie shows the porn to the parents. Juan Epstein (Robert Hegyes), who is in charge of putting the film in the projector, confesses to his mistake and Julie is off the hook. The episode makes a pertinent point about personal responsibility and the thin line between the pornographic and the educational, a moral that still resonates to this day — and is reflected by the blink-and-miss-it bit of nudity in the "Welcome Back, Kotter" pilot.