Ombligo translates to "belly button" or "navel". It's an interesting and somewhat unexpected word to find in a song, especially in a romantic or flirtatious context.
In this song, the line "Yo quiero darte un besito en el ombligo" (I want to give you a little kiss on the belly button) is playful and intimate. It's a unique way to express affection and desire, making it memorable and a bit cheeky, which can definitely entice a learner to discover more about the song's lyrics.
"Uchi Wala" is a playful love song about being completely drawn to someone. Maffio and Nicky Jam sing the Spanish verses, promising to give everything they have and never let this person go, while Akon comes in for the English bridge with the same idea: he can't forget the way they make love and won't ever leave.
"Uchi wala" itself is the song's hook, more of a catchy chant than a phrase with a literal meaning, and it repeats through the chorus to keep the energy up between verses.
At its core, the song is simple: someone caught your eye, and now nothing else matters as much as being close to them.