To make a verbal commitment — agreeing to something on your word alone, no contract, no paperwork. In Mexico and Central America, apalabrar is how business gets done between people who trust each other. Your word is your bond, and breaking it is a serious breach of honor.

Across Latin America, intense fear or extreme nerves — the kind that makes your whole body shake visibly. When you have la tembladera, your body gives you away completely.

Smuggled or contraband goods brought into Mexico from abroad without paying customs — the black market treasure of border cities. Fayuca is everything from electronics to clothing sold under the table, usually cheaper and sometimes better than what's in the stores. Border towns run on it.

The sheer audacity of doing something outrageous without shame or remorse — showing up, pulling the stunt, and walking away unbothered. Descaro is universal across Spanish-speaking countries: the person who cuts the line, takes credit for your work, or borrows money with zero intention of paying it back.