Looking for a collaborator

Still at it, six months later. Several new numbers, all in need of a musical collaborator. My latest was a parody of Dylan’s “Forever Young”–it’s a sticky sweet sentimental song, addressed to a young person, and I’ve written new lyrics “Forever Hung” addressed to an older man about retaining his sexual powers. Pretty funny, though the lyrics are one obscenity after another. When I prompted SUNO with the lyrics and asked it to supply a melody, it responded that it couldn’t help me because the lyrics I provided (remember, it’s a string of body parts described in the most vulgar language possible) were under copyright. Dylan’s lyrics are under copyright, of course, but how are mine a problem from that point of view? Fortunately I can play the correct chords on guitar and sing my new lyrics, but it seems strange that “copyright” was the issue SUNO picked to refuse my request.