- Moderate
- Seasons 1 to 2 had sexual jokes that were not worse, but after Season 3, these sexual jokes started becoming more borderline graphic and explicit (no actual sex is shown, but it is joked about). Nudity is also shown, but it's always blurred on TV and uncensored on DVD.
- In the Season 4 episode "PTV", many flashbacks of sexual acts and nudity are shown during the song "The Freakin' FCC" but they don't last too long.
- Glenn Quagmire is a sexual pervert, though this is meant to be comical. He does many things that would be illegal in the real world, and he is also heard having sex a lot but this is never shown graphically. However, it is shown occasionally but it is brief.
- One episode shows Peter and Lois lying down on the couch naked while they are high but everything is strategically obscured. On TV, they are in their underwear.
- Characters are heard having sex throughout, but it is never graphic and it's usually brief.
- On the DVDs up to Season 4, all graphic nudity was either blurred (on TV) or obscured, but after Season 4 however, all graphic nudity is actually shown if it isn't obscured, but since this is an animated show, it isn't that bad.
- Most of the time, male genitalia is covered by their stomachs.
- Some episodes also deal with pornography, but it is never shown in explicit detail (one episode shows clown porn, but they are in their underwear in the video).
- Rear nudity is shown quite frequently in the series.
- Many gay and lesbian characters appear in the show and some are shown making love.
- One scene shows Adam West flashing the convenience store clerk. This is played for laughs as it's blurred on TV, but his penis is shown on the DVD versions.
- When Peter fights with Homer in Springfield, several men and women are seen naked (seen from behind).
- The Griffins' neighbor, Mr. Herbert, is a pedophile.
- All of the nudity and sexual stuff is either cut or censored on the streamed versions, especially on TV.
- Frank sex talk.
- There are quite a lot of sexual innuendos and references.
- Herbert is a sex offender who has attractions for kids, most notably Chris Griffin.
- It is implied in some episodes, Meg and Chris have an incestous relationship.
- In season 1 or 2 it's the one where they fight for something like a trophy and the womans buttocks are shown for 17 sec
- Frequent sexual innuendo and references --sometimes subtle, sometimes overt.
- Peter is nude a lot, but his weight hides his frontal area.
- Sexual content and partial nudity throughout of the series.
- In season 3 episode 18, Meg dates a nudist. He is shown onscreen.
- Peter sticks up a pill on Brian's butthole.
- In one episode, there in a restaurant where his favourite song is played. " Surfin Bird ". He goes to people saying " bird is a word " and " don't you know that a bird is a word ". Then he opens the women's bathroom door and says " lady on the toliet, bird is a word ". This scene is played for laughs and no nudity is shown.
- Loretta and Quagmire have sex. You only see their faces, but no nudity is visible.
- Theres a scene where Peter Griffin is naked and sees Brian with no fur. Brian tortures him by hugging him with his naked body, and making him rub his belly, and his 6 nipples are completely visible. Peter was crying and said that its like he's pushing around a plastic bag of chicken bones. This is by far one of the most disgusting parts in the show.
- Stewie shows his buttocks and then quietly farts in a scuba suit tube.