No mames wey, also encountered as no mames guey or no mames güey is a colloquial expression in Mexican Spanish.
The phrase could be roughly translated to English as “no way dude”.
“No mames” is a phrase that can be used to express surprise, excitement, fear as well as anger, while “wey” or “guey” is a way to refer to a person (usually male) without calling out their name, similar to the English “dude”.
While the exact origin of “no mames wey” is debated, it is mostly agreed upon by Spanish speakers in the US that it was coined in Mexico.
An early example of it emerged in a post on a Spanish language forum as early as 1992.
“No mames wey” was first defined on Urban Dictionary in 2009.
The phrase, however started getting popular after Diego Luna taught the expression to Conan O’Brien on his late night show in 2015.
Since then, the phrase emerged in numerous contexts online.
- Theculturetrip.com – All The Mexican Slang Terms You Need To Know
- Doorwaytomexiko.com – No mames vs No Manches – How to use them correctly
- Dictionary.com – No mames