My wife and I have always loved going on "flashing evenings" or afternoons on occasions. It started with her pussy being for my eyes only. This developed into allowing others a glimpse, then maybe more.

Wives, GF's, neighbours, acquaintances, strangers. Not necessarily cuckold as such. Maybe a stag and vixen dynamic. May just opportunistic seduction. To fuck with or without knowledge. Best to do it in front of their other half though. Post pictures, recount an experience. Express a desire or fantasy.