It was posted on ATRL and we misinterpreted Kintsugi's đź‘´ reply as the FJM collab instead of the "Grandfather" word in the title.
https://atrl.net/forums/topic/422755-lana-del-rey-did-you-know-that-theres-a-tunnel-under-ocean-blvd/?do=findComment&comment=23024959
The acronym title appeared one day before that on Wikipedia, so far I think that's the original source
https://en.wikipedia.org/w/index.php?title=Did_You_Know_That_There's_a_Tunnel_Under_Ocean_Blvd&oldid=1129676345
The Trisha Paytas titles got added later.
https://www.interviewmagazine.com/fashion/lana-del-rey-and-chuck-grant-are-the-chillest-sisters-at-the-gucci-cruise-show
Lana mentioned Fishtails in this interview
LANA DEL REY: I think fishtails—we’ve been talking about fishtails—
I'm really curious how the voice notes in Fingertips transform to the final song, and how noticeable the automatic singing is compared to her other songs.