Since this is a fetish site, we should point out ass play, and anal sex can be used in ways not usually considered in vanilla play. Depending on your relationship and what your kinks are it can be utilised as a form of humiliation or as a punishment. Alternatively, is sometimes used as a reward for good little subs who bend over when they are told.
For obvious reasons, the gay community dominates the anal play arena, but that doesn't mean these are the only people who enjoy it. Whether you’re a leather pup in training, a rubber pig who needs to be put in his place or anything else your kinky imagination can dream up, the most important things to remember are consent and cleanliness!