Cabeza literally translates to "head". While it's a common word, its usage in this song is particularly interesting and memorable.
The lyrics repeatedly state, "porque pierde la cabeza" (because she loses her head). This phrase is an idiom meaning to lose control, go crazy, or act irrationally, often due to intoxication or strong emotions. In the context of the song, it refers to the girl losing control after drinking beer, making it a fun and engaging way to learn a common Spanish idiom.
Ever feel like your partner is more interested in the party than in you? That's the problem the singer faces in this fun, upbeat track. He declares he's losing interest in his girlfriend for one simple reason: whenever he takes her to a dance, all she wants to do is drink beer!
The song playfully describes a girl who loves to dance but hates to work. Her one true desire seems to be beer, and not just one, but a 'doble de cerveza' (a double beer). The singer warns that when she drinks, she 'pierde la cabeza' (loses her head), suggesting she gets a little wild. It's a classic party anthem about someone who just wants to let loose and have a good time.