arremangado literally means to have your sleeves rolled up. In popular slang, especially within Regional Mexican music, it describes a personality type: a go-getter, a hustler who is proactive and always ready for action.
In the song, the singer says, "Bien sabes soy arremangado" (You know well I'm a go-getter). He uses the word to define his confident, hard-working persona, contrasting it with traditional romantic gestures like buying flowers.
Brillarosa throws you straight into the chaotic, fast-spending world of Mexican-American front-runner Fuerza Regida. Right from the jump, the narrator makes his priorities crystal clear: Billete grande lo que quiero ("Big bills are what I want"). He spends his days chambeando (Mexican slang for hustling or working hard) to pull in serious cash, lighting up cherry weed whether he is traveling by air or by sea. Things get wildly messy in his personal life, too—he admits with total bluntness that his wife has dark hair while his side girlfriend is blonde (Mi esposa tiene el pelo negro y mi novia es una güera). His phone is melting down with nonstop Instagram alerts, and he shrugs it off by explaining he took after his dad by living fast to tough corridos.
When it comes to romance, do not expect cheap sweet-talk. He tells his girl flat out: Yo no soy de comprarte flores ("I'm not the type to buy you flowers"). Instead, he sends a private chauffeur to pick her up, demands she put her phone on modo DND (Do Not Disturb mode), and offers to pop bottles of luxury Dom Pérignon champagne (rompo la Dom Pé). The song takes its title from that lavish flex: Brilla rosa el champú que te compré ("The champagne I bought you shines pink"), where champú is playful slang for high-end bubbly. He describes himself as arremangado (reckless, bold, and ready for whatever) and sums up his messy love life with a cheeky battle cry at the end: Dolido pero no arrepentido ("Hurt, but not regretful").