The BDSM activity or play inflicting pain or pleasure on the anus or rectum. Any insertion done in the anus is part of the activity. Some bdsm activity that uses anus are such prostate milking using prostate massager. Enema is another activity through the anus as this is not just a play but to clean the rectum. Even to some men who are not into bdsm, they engaged in prostate milking regularly for their health safety.
Anal play isn’t as taboo as it once was. It’s actually become a popular way to experiment with and can be an incredibly pleasurable thing.
The play may includes the insertion of toys like anal beads, dildos, vibrators, anal vibes, prostate toys, anal lube, and douches or enemas.