Arrocito en bajo literally translates to "rice on low heat." It's a Colombian slang term that refers to a secret or hidden romantic relationship.
In the song, the singer uses this phrase to describe his new girlfriend, whom he's keeping a secret from his friends and family. He's nurturing this relationship quietly, like rice cooking slowly on low heat, until the right moment to reveal it. This makes it a very unique and culturally specific phrase.
Get ready to smile with Peter Manjarrés' "Mi Arrocito En Bajo"! This song tells a super relatable story about finding love when you least expect it. Our guy goes to a friend's wedding, single and ready to party, thinking he's just there for a good time. He sees a girl, and that's it – game over! He says it was like a "carambola de billar" [billiard carom], where he wasn't looking for anything but ended up with a girlfriend.
Now, he's totally smitten, but he's keeping his new romance on the down-low, calling her his "arrocito en bajo" [rice cooking on low heat], which is a Colombian slang term for a secret, budding relationship. He's sneaking away from his friends when he's out drinking because they're "tocando el poste" [touching the post], meaning they're trying to set him up with other people. He knows his friends are going to investigate and "sapiar" [gossip] about who he's with, but he's enjoying the secret for now. Eventually, he plans to introduce her to everyone, but until then, it's their little secret, and he loves it!