Irate mariachi
From A KoL Wiki

This mariachi is seriously upset about something. Could be that the maraca player is late, could be that he forgot the chords to "Dos Arbolitos," who knows. Either way, it looks like he's going to take it out on your ass.
He swings his guitarron at you, but misses you completely. Man, that was a low blow.
He plays the highest note he can on his trumpet. Your ears start to bleed. Ouch! Ouch!
He swings his guitarron at you and clips you in the head. It hurts you deeply. Eek! Ugh!
You hit for 16 damage. WHAM!
You win the fight!
You acquire an item: bottle of tequila
You acquire an item: irate sombrero
You acquire an item: mariachi G-string
You gain 2 Chutzpah.
Found South of the Border.