Barbería literally translates to "barbershop". It's an unexpected and somewhat rare word to find in a song, especially in a romantic context.
In the lyrics, "Sin ti me gana barbería" (Without you, the barbershop wins me over), it seems to be a playful way of saying that without his partner, he might neglect himself or his appearance, perhaps implying that the barbershop (or the need for one) would take over his focus. It's a unique and memorable phrase that adds a touch of humor and personality to the song.
Aymée Nuviola's "Camina Que Yo Voy Detrás" is such a fun, upbeat song about being completely devoted to someone you love! She's feeling so happy every day because she has a "hombre de verdad" [a real man] in her life. It's clear this person brings her immense joy and happiness, to the point where she says, "sin ti me gana barbería / Pero veo tu risa y no pienso en Maná" [without you, barberia wins me over / But I see your laugh and I don't think about Maná]. It's a playful way of saying that even if things get tough, his smile makes everything better.
The main message is right there in the title and chorus: "camina que yo voy detrás" [walk and I'll follow behind]. She's telling him to lead the way, because she trusts him completely. "Tuyo son mis sueños / marca el camino que yo recibo" [My dreams are yours / mark the path that I receive] really drives home how much she believes in him and is ready to follow wherever he goes. She just wants him to "sigue caminando y no te pares" [keep walking and don't stop] because she knows he has "la llave" [the key] to their happiness together. It's a beautiful declaration of love and unwavering support!