Season 8 · Episode 15
The Simpsons
The Simpsons befriend a shop owner, but when Homer discovers the man is gay, he worries about his influence on Bart.

Used as a slur in this episode's dialogue. The word 'mariposa' (butterfly) has long carried this meaning as coded slang in Latin American Spanish. The diminutive '-ita' makes it either more contemptuous or, depending on tone and speaker, ironically affectionate. Context and tone determine which.
In standard Spanish 'raro' means odd or strange, but in Latin American colloquial use it has historically been used as a coded or euphemistic term for a gay person. The episode explicitly plays on the tension between its literal meaning and this social meaning, making it a genuinely non-compositional usage.
In this episode 'festivo' is used as a gentle euphemism. On its surface it means lively or celebratory, but the episode deploys it as a knowing understatement for someone who is gay. The humor rests on the gap between the cheerful literal meaning and the intended social signal.
The base form of the slang above, also used in the episode. In everyday Latin American Spanish this word does double duty: its literal meaning (the insect) and this coded meaning, whose reading depends entirely on context.
Borrowed directly from English. In Latin American Spanish 'clóset' can mean a literal wardrobe, but in this episode it is used in the figurative sense common in both English and Spanish-speaking LGBTQ+ contexts, referring to concealing one's identity.