The more “elegant” way especially the first time is:
FIRST douche, we must keep it clean, use lots of lube, Gentle finger action to get used to the feel and to help relax the muscles, then move on to a small sex toy and work your way up to something similar in size to the penis in question. Lastly, get into position, pull the toy out and insert the well lubed penis.
Because the anus is going to be a tighter fit than the vagina, most people (male and female) will climax faster.
Because the anus was gently stretched open rather than forced, it is more comfortable and more pleasurable for her, and if you make it enjoyable for her, she will be more likely to want to do it again.
Warning to the receiver, because the anus is opened air will get in and afterwards you may have gas effects (it’s only air). Also, if your partner cums inside, you may experience “wet farts”
The rectum is made to absorb moisture from waste , this makes it easer to become infected from an infected partner.
Of course both partners need to clean up afterwards.
According to a survey in 1999 out of 20,482 people polled (10878 men, 10604 women), 11,889 said they enjoyed anal as a regular part of their sex life. (UC-S)