What is no mames?

"No mames" is a popular Spanish slang expression commonly used in Mexico and among Spanish speakers in the United States. It's an informal phrase that conveys disbelief, surprise, or skepticism, similar to saying "You're kidding!" or "No way!" in English. The phrase "mames" originates from the verb "mamar," which means "to suck," but in this context, it does not relate to its literal meaning. Instead, "no mames" serves as an informal way to express incredulity.

It is important to use this phrase cautiously, as it can be considered vulgar or offensive, especially in more formal settings or among people who are not familiar with its colloquial use. Those who are not close friends or family might find it disrespectful. In more polite company, alternatives such as "No manches" are sometimes used, which carry a similar meaning but are slightly less crude.