Yes, that David Lee Roth.
Are you old enough to remember the first time David Lee Roth exited Van Halen? I’m not, but I’m into movies so I got interested when I found out he wrote a screenplay. Apperently, that was why he left Van Halen in the first place. Unfortunately, the film was never made, but the script recently surfaced online and you can take a look here.
I’m not a screenwriting expert, but I do have some experience in the field and by the look of that screenplay I’m not surprised that it was never produced. It’s… wild.