This isn't something we say is it? Isn't this a ML thing?
Oh, I know this one. (been around a while!) There was a mom whose kid was supposedly a genius because when she lost her car keys he piped up with "twy sentwa!" (try the Sentra) and lo and behold, there they were. Except he was a very young toddler (16-18 months?) so it was a bit implausible.
But it refers to someone bragging about their kid.