When I was 16 I used to get on Omegle and offer to run an RPG for whoever I was matched with.
They chose the subject.
Awareness of RPGs varied but I had the following exchanges:
Thoth: In which an esoteric AI invasively investigates spacefaring xenomorphs
Hitler Before Fame: In which a young Hitler is assaulted by skinheads in a case of mistaken identity
The Terror of the Voynich Manuscript: In which a team of researchers in a remote cabin imperfectly unlock the hypergeometric principles of the Voynich Manuscript
Dinosaurs vs Zombies: In which a space dinosaur fighter squadron bites off more than it can chew
Parisian Mystery: In which a private eye investigates arms traffickers in 60s or 70s Paris
The View from the Isle: In which a global conflict between the United States and China spills over into Ireland
French Class at the University of Georgia: More or less exactly what it sounds like
Battle Royale: In which kidnapped students must make an abattoir of their school or starve...