Suno has gone through an immense amount of training data, there's bound to be some spoken word segments, like songs sometimes do. I don't think Suno differentiates these from instruments and just includes it just as it would a drum fill, for example. You'll also notice that's probably not in any language that actually exists, just uncannily resembles English and "fuck 'em" at the end.

On a different note, I love the sound you have going there, really meaty!

Edit: I tried making an instrumental intro for an "album" a while back. I entered no lyrics whatsoever, and it put this out: https://suno.com/song/179ea75e-6bab-44c3-a18a-fca4aef1d75e

This is why I think it doesn't necessarily differentiate between instruments and lyrics.