Sideshow Bob Roberts

Used throughout Latin America to label someone as mentally unstable or holding views considered extreme. Milder than loco in many contexts, with a sense of harmless but ridiculous eccentricity, though it can also be dismissive.

A fixed phrase warning that someone is overplaying their intelligence or trying to game a situation. It carries a tone of mild rebuke and implies that the clever move will backfire.

A fixed political label in Latin American Spanish. Ultra- as a prefix intensifies the base word beyond its normal range, so ultraderecha sits well past conservador on the political spectrum. The construction is common with other directions: ultraizquierda, ultraconservador.

A humorous portmanteau coined for rhetorical effect, blending tonto (fool, idiot) with the Greek-rooted suffix -cracia/-cratas (rule/rulers). This type of word-blending insult is common in political satire in Latin American Spanish. The meaning is transparent once you know tonto, but the form is non-standard and worth noticing.

A fixed compound noun formed from sabe (he/she knows) + lo (it) + todo (everything). Used to mock someone who acts as if they have all the answers. Common across Latin America and always slightly dismissive in tone.