On that theme, I asked Suno to sing a rap but "remove all the vowels", and it's hilarious how well it attempts to sing the silly result:

https://app.suno.ai/song/30f8223e-0d0b-4cac-8b3f-5d8f0f743e2...

The lyrics generator is some version of GPT so you can give it natural language instructions like this.