Rulay is a Spanish slang term, particularly common in urban music, that means "chilling" or "relaxed." It describes a state of being cool, calm, and having a good time.
In the song, Myke Towers uses it to convey a carefree and confident vibe, singing, "Que andamo' rulay, pide que hay" (We're chilling, ask for whatever you want). It's an interesting word because it's a modern, informal expression that captures the laid-back atmosphere of the track.
"Si Se Da" ("If It Happens") is a confident, party-driven reggaeton track from Myke Towers and Farruko. The lyrics follow a narrator flexing about a wild, no-strings night out — bottles, smoke, a woman he's confident wants him too, and a crew of friends who all know exactly what might happen if the moment lines up right.
The title phrase repeats through the chorus as a kind of shrug: nothing is promised, but if it happens, it happens. Between verses, the song shifts from flirting and partying to a boastful rundown of money, jewelry, and status, before closing with shout-outs to the artists' own crew and label.
It's less a story than a mood — a swaggering snapshot of a big night, told with the playful, half-joking confidence typical of Puerto Rican reggaeton.