Word/Phrase: no mames guey
Translation: don't mess with me dude
Pronunciation: no ˈmames ˈɡwei
No mames guey - No mames, güey.
This is not a joke - Esto no es una broma.
You can't be serious - No puedes estar hablando en serio.
I can't believe it - No puedo creerlo.
Let's go out - Vamos a salir.