Parties for spanking naked men

I have been to:
 Male/male spanking parties
 BDSM ..anything goes...parties
 Spanking-only parties
 Femdom parties (where women run the scene, whatever it is).

 My first date with Merry was at a BDSM party, where, in two separate sessions, she bruised my bottom with various paddles.
Since then, we've been to many such parties together,  including the BDSM or spanking-only or Femdom types.

Here's some views of various parties: