All the unnecessary question marks in your title make this look like spam. Plus, that nightclub is one of the first things people started looking into.

http://archive.is/CcY76 - Front page

http://archive.is/toIHt - Upcoming Events (not updated for almost the past year)

https://archive.is/WQ9Hp - Le Boum

https://vimeo.com/30190585 <- daytime disco brunch

https://archive.is/W77RY Boum Boum Room

looks like your typical young adult hedonistic french style night club targeting the LGBT crowd.

here's an article

https://www.washingtonpost.com/express/wp/2015/10/14/with-la-boum-boum-room-d-c-just-got-a-lot-weirder/?postshare=3231444849094951

one comment I came across noted (about the brunch)

There's an MC, a DJ, a light show, etc. Everyone gets on their chairs and dances their hearts out, there are sing a longs, and patrons get naked and get on the bar. They do a lot of 'games' between people which are fun to participate in and to watch. The food is also really good.

I think they draw the line at actual sex.

generic searches indicate there are a number of these by similar names and concepts around the country, so it might be a subculture thing or even a concept franchise.

looks like they do Pansexual Burlesque which is mildly worrying It also explains Jame I love l'enfants