Secret NYC Sex Club

the information that you are looking for might be found in the comments section of the below clip, which is what that dailymail article is based from:

These have been going on since the mid-2000s. Apparently there are a lot of different variations, some are truly swingers club, some allow men in with a reference, men usually pay a fee. The ones I've went to weren't really swingers, but mainly where prostitutes (street walker level). They're mostly black, 6s mainly, a 7 every now and then and a 8+ on a blue moon. There's usually gambling. I won my first thousand dollar pot at one of these. Mostly black and urban crowd. There are other scenes like this, for the more white crowd, girls tend to be more evenly mixed and less gambling. Music is still urban/hip-hop, either way, and tons of drinking and indoor smoking.

I don't bother with any of these I feel like it's just going to be a huge ripoff.

And here I thought Muddy was about to break the first rule of Fight Club...