There was a lot of censorship in Rocko's Modern Life, due to scenes with a lot of adult theme, sexual or for other reasons.
Rocko's Modern Life has been noted for its racy humor. Adults made up more than one-fifth of the audience for the show during its run. The series contained numerous adult innuendos, such as Rocko's brief stint as a telephone operator in the episode "Canned": the instructions on the wall behind him helpfully remind all employees to "Be Hot, Be Naughty, and Be Courteous" while he flatly repeats "Oh baby" into the receiver. Joe Murray noted that the season one segment "Leap Frogs" received "some complaints from some parents" due to its sexual humor, leading to Nickelodeon removing the episode from air for the remainder of the show's run, although it later aired on the U.S. cable channel Nicktoons, and was made available on the season one DVD, released in 2011. In "The Good, The Bad, and The Wallaby," Heffer Wolfe encounters a milking machine and finds pleasure, although only his reactions are shown onscreen. According to writer/director Jeff "Swampy" Marsh, the scene was originally supposed to have hearts appearing in Heffer's eyes at the climactic moment. Although it clearly wasn't going to be included, they described the scene to Nickelodeon censors anyway: "We described the scene, and then waited for the axe to fall, but all they said was 'can you change the hearts to stars?', we said sure, and it went in." The scene, as well as a scene showing Heffer's break-up with the machine, were later removed. They are intact in the Canadian broadcasts of the episode, however. In addition, the uncut version can still be found on the VHS "Rocko's Modern Life: With Friends Like These."
There were at least two occurrences of immediate censorship of the series. The original broadcast of the segment "Road Rash" featured a scene in which Rocko and Heffer stop at what is suggested to be a love hotel (the "No-Tell Motel") advertising "hourly rates" and ask the horse desk clerk for a room, who infers the two will be engaging in intercourse: "All night? [whistles] Wheeeooo! Okay." The first airing of "Hut Sut Raw" included a scene in which Rocko is picking berries; upon picking one lower on the bush, a bear rushes out whimpering and grasping his crotch. This scene is untouched in Canada. Both scenes were edited by Nickelodeon after their first broadcasts and are the only instances of censorship on the season two DVD, released in 2012. On the season three DVD, the "Wacky Delly" segment was shortened by approximately ten seconds to remove footage of Sal Ami repeatedly whacking Betty Bologna over the head with a telephone receiver. In addition, the restaurant named "Chokey Chicken" (a term for masturbation) was renamed "Chewy Chicken" for the series' fourth season. However, in the 2019 special Rocko's Modern Life: Static Cling, they go back to using the original "Chokey Chicken" name. As the series entered reruns after cancellation, more scenes were cut. The entire episode "Leap Frogs," in which Bev Bighead attempts to seduce Rocko, was skipped.
When Shout! Factory announced a DVD retail release for the series, there were concerns on whether Nickelodeon would allow Shout! to release the series complete with some of the racier humor that the network eventually cut out for reruns. In the end, Shout! Factory only received materials from sources that were edited for broadcast, so the episodes still remained censored on the DVDs. The only uncut release of the show on DVD so far was published in Germany in October 2013, although this release is still missing the uncut version of "Road Rash." On November 20, 2018, Rocko's Modern Life: The Complete Series was re-released by Paramount Home Media Distribution. But this version was just like the Shout! Factory version and included all of the censored versions of the episodes.
Back when the show was rerun on Nicktoons, "Leap Frogs" and "Heff in a Handbasket" (the two episodes banned for content) were restored. While the former got removed from the rotation again, the latter was still in circulation until the show itself got removed from the network.