Seeing how my ideas are far out there, I would like input from other on stories where two women and a lucky guy get fully naked and have raunchy sex in public
You could go for the free-use road, with a fictional world where public fucking is normal.
Could be more normal, and three horny teens in a changing room, trying not to get caught.
-Alternative, two horny teens (either FF or MF) are fucking in the changing room, and get caught by the shop assistant, who joins in, in exchange for not calling store security?
TV show where random people are invited off the street to fuck in exchange for money and fame?