Season 2 · Episode 7
Gravity Falls
The kids, along with Old Man McGucket's help, discover there is a secret society in Gravity Falls.

A fixed idiomatic warning telling someone not to expect something good. The literal meaning (don't make illusions for yourself) does not land naturally for learners; the phrase functions as a single unit meaning the situation is unlikely to go the way you hope.
A very common Latin American colloquial expression meaning to make a mistake or blunder, often by saying or doing the wrong thing. Literally 'stuck the leg/paw in it.' Used casually between friends or family.
The verb ilusionarse means to get one's hopes up or feel excited anticipation, not to have illusions in the English sense. A learner mapping it to English 'illusion' would misread the emotion completely.
A made-up, comic insult typical of eccentric or rural character speech in Mexican and Latin American animation. Its words are individually meaningless as an insult; the humor comes from its absurdity. Used here by an older, quirky character as a substitute for a real curse word.
A comic invention within the show's fictional pop song. It parodies real-world slang coinages in Spanish-language urban music, where rappers sometimes invent or repurpose words. The joke is that nobody knows what it means, including the characters.
A fixed investigative phrase meaning to uncover the full truth of a situation. While 'fondo' literally means bottom or depth, the phrase as a whole signals a determined effort to expose something hidden, and is used across Latin America in both casual and serious registers.