What is Armate?
Mexican slang: An order to organise something, e.g. a party, a bbq etc.
Armate la barbie (organise a bbq)
Armense una party, no? (you guys should organise a party)
or
Se Armo un desmadre (It ended up in a bloody mess, or there was a f**king bash)
See do it, huevon