It's a drinking club with a nice line in charity work. A bit like the Roundtable or the Royal Antediluvian Order of Buffaloes.
If you want to join you can apply online to join any lodge . For example this one in Hull : http://www.minervalodge250.org.uk/about-us.html
If rumours are true, you have to go a bizarre initiation ceremony involving whips and abuse.
If the rumours are true, I'm up for it.

