In Mexican slang, an international soccer (football) game of low importance and caliber, especially against a low-ranking side.

Moleros often involve Mexico (El Tri) play against another international side of low standing, such as Guatemala, Bolivia, or the Gambia, though sometimes they involve a solid opponent (like Croatia) but both teams field weak squads. They are often played in American cities with large Mexican-American populations, and quite frequently in NFL stadiums. Some frequent venues include Los Angeles, San Diego, the SF Bay Area (Santa Clara), Houston, Dallas, Chicago, and Miami. These games are broadcast on Univision in the US and TV Azteca in Mexico.

Domestic Mexican media and fans often mock the importance of these games, as they are organized through a deal via Soccer United Marketing and the Mexican Football Federation. They might even be as mexploitation events.
Man, I don't know why my dad wasted his money to watch Mexico play China, that game is a molero.
by Return_of_BG_97 October 12, 2019
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A dirty Molero is either when you get anally violated in basketball by 3 or more other men, each one of a different race, in a public school while anyone can watch you getting milked by a jew, child trafficker, or bomberman in the span of 30 minutes.
The other option is just being a hardstuck silver in Valorant.
"Bro yesterday I dirty Molero'd a guy with other 2 guys"
"Stfu you're a dirty Molero yourself you cancerous one-armed Reyna main mf"
by Mechchachch October 9, 2022
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