So forget the harsh scents and chemicals — before sex, simply clean the outside of the anus In fact, rectal biopsies have found that individuals who performed enemas with tap water or . Do not use enemas, including soap suds or Fleets. But if you're administering an enema for the first time, you may experience some minor discomfort. Fleet is a popular brand of these types of enemas. Pain may be the result of hemorrhoids or tears in the rectal lining. Another reason for using enemas before butt sex is practical. If there is " something in the pipe," anal stimulation or bearing down during anal sex can bring on.