Ok… mamón is another absolute beast in the world of Mexican slang.
And just to make your life harder, it’s normally negative when talking about a person… and positive when talking about things, results, etc.
So yeah, when talking about a person, it generally means: 👉 snobby / condescending / stuck-up
But when talking about things, it's often more like: ➡️ cool / badass / impressive
Let’s whizz through its main uses... 1️⃣ Describing a snobby or stuck-up person:
Ese wey es bien mamón. That guy’s such an asshole. / That guy’s really stuck-up.
Parecía buena onda, pero resultó bien mamona. She seemed nice, but she was actually really snobby. 2️⃣ Describing something that’s cool, sick, or impressive:
Quedó mamón. It turned out great. / It came out badass.
Tu playera está mamona. Your shirt is cool as hell.