Regular use of 'damn,' 'hell,' 'ass,' and 'crap' throughout the series. Occasional uses of stronger words like 'bastard' and 'bitch' in later seasons. Bart's catchphrases include 'Eat my shorts' and 'Don't have a cow, man.' Homer's 'D'oh!' is constant. God's name is used as an exclamation ('Oh my God') with some regularity. Insults and name-calling are frequent and played for laughs.
Cartoon slapstick violence is pervasive — Homer strangles Bart regularly (played as a running gag), characters are hit, punched, shot at, and injured in exaggerated cartoon fashion. The annual 'Treehouse of Horror' Halloween episodes feature significantly more graphic cartoon violence including dismemberment, gore, and horror-themed content. Itchy & Scratchy cartoon-within-a-cartoon features extreme cartoon violence (a cat and mouse brutally maiming/killing each other) as satire of media violence.
Sexual innuendo and suggestive humor are recurring throughout the series. Homer and Marge's sexual relationship is referenced frequently with innuendo. Characters make sexual jokes and references. Some episodes feature storylines involving affairs, strip clubs (Marge briefly works at one in an episode), and sexual situations. Later seasons push boundaries further with more explicit innuendo.
Homer's secretary Waylon Smithers is portrayed as gay with an unrequited crush on Mr. Burns — this is a recurring comedic element. Marge's sister Patty comes out as a lesbian. Same-sex marriage has been featured positively in episodes. Later seasons include more LGBT characters and storylines presented approvingly.
The 'Treehouse of Horror' annual Halloween specials regularly feature zombies, demons, the devil, witchcraft, aliens, and supernatural themes — though typically played for comedy and parody rather than presented as aspirational. Some episodes feature deals with the devil (Homer sells his soul for a donut). Lisa dabbles in various spiritual traditions.
Homer Simpson's alcoholism is one of the show's most defining characteristics — he is constantly at Moe's Tavern drinking beer (Duff Beer), frequently shown drunk, and his drinking is largely played for laughs with minimal consequences. Barney Gumble is a severe alcoholic played for comedy. Beer and bar culture are normalized and celebrated. Occasional marijuana references appear in later seasons. Characters smoke cigars/cigarettes occasionally.
Bart's bare buttocks are shown occasionally (mooning as a prank). Homer has been shown nude from behind and with strategically placed objects. Brief animated nudity played for comedy. The Simpsons Movie features a notable scene of Bart skateboarding nude with full frontal animated nudity of a child character.
God and Jesus appear as characters in the show, sometimes treated respectfully but often used for comedic purposes. 'Oh my God' used as an exclamation. Christianity and organized religion are frequently satirized through the character of Reverend Lovejoy, who is portrayed as bored, unhelpful, and going through the motions of faith. Ned Flanders, the devout Christian neighbor, is portrayed as earnest but also as annoyingly pious, uptight, and sometimes ridiculous — making sincere faith the butt of jokes. Church is depicted as boring. The Bible and prayer are sometimes mocked.
Despite its many issues, the show does contain some positive elements. Plugged In acknowledges the show is 'surprisingly warmhearted' at times. Family loyalty is a recurring theme — Homer and Marge's marriage survives despite constant strain, and episodes often end with the family coming together. Marge is generally portrayed as a loving, faithful wife and mother. Some episodes genuinely explore themes of sacrifice, forgiveness, and doing the right thing. Lisa often advocates for justice and compassion. However, these positives are thoroughly mixed with the problematic content.
Set in Springfield, the average American town, the show focuses on the antics and everyday adventures of the Simpson family; Homer, Marge, Bart, Lisa and Maggie, as well as a virtual cast of thousands. Since the beginning, the series has been a pop culture icon, attracting hundreds of celebrities to guest star. The show has also made name for itself in its fearless satirical take on politics, media and American life in general.