Season 2 · Episode 1
Gravity Falls
The Pines family is starting to get everything back to normal after the Lil' Gideon incident. They throw a “Mystery Shack Is Back” party, but some unwelcome guests intend to crash it.

Fixed verbal phrase. 'Meterse' here does not mean 'to put oneself' in the literal physical sense but signals entering a difficult or risky situation through one's own actions.
Uses the verb 'cundir', which in this fixed expression means 'to spread'. The phrase literally means 'let panic not spread'. 'Cundir' in other contexts can mean 'to be productive' or 'to go a long way', so the same verb carries very different meanings depending on context.
Used affectionately in Latin American Spanish, especially by an older speaker toward younger people. The tone is warm and playful rather than genuinely insulting.
Common mild insult in Latin American Spanish. Stronger than 'tonto' but not vulgar. Often used venting frustration rather than as a serious insult.
Describes someone who meddles in other people's affairs. Used as both an adjective and a noun in everyday speech.
Used as a makeshift nickname or taunt directed at creatures lacking eyes. Non-standard compound, humorous in register.