In her mid 40s my wife 'helped out' at a massage parlour not far from Gatwick airport. In her many contacts she had met the couple that were the owners who arranged it for her. I knew nothing about this until much later. I used to work away a lot and was also an army reservist so she had endless opportunities for her private hobbies. I was informed about it by the ex wife of our neighbour who knew a lot about her activities but what happened even she does not know. She spent 3 x 3 days there and had 'many' customers.How “dark” this is could be questionable. But...
I have this fantasy that my wife has taken a position at a brothel. In the afternoons, she dresses up and heads there. Once there she simply waits until the customers arrive. She has a few regulars. But most of the men are strangers. Once a client picks her, they adjourn to “her room”. Which is pretty much just a king size bed. Each guy pays for her to suck his cock. He gets to lick her pussy. Then he fucks her.
At the end of the day she gets paid. But it’s not about the money. It’s the excitement.