I got GPT-3 to write (joke) pick-up lines once and it generated: "Your eyes are as blue as the rings around Uranus". Genuinely original I believe, searching it on google doesn't show it anywhere.
I've done some playing with GPT-3 as well and found it extremely good at weeding out misleading item descriptions on Amazon (given the description, ask some questions about it, it gets them right), and pretty good at fan fiction (with a little bit of setup, it writes stories with a beginning, middle, and end).