Karrine Steffans: How do I put this gently? Ummm, well, I guess there are no easy ways to discuss the "pain in the butt" subject of anal sex, therefore, please accept my apology, in advance, for putting you through this.
Many men and women enjoy the practice of what is technically called sodomy. There are thirty countries and eight states in the US in which opposite-sex sodomy is illegal. So, if you and your husband live in one of those eight states, you can always use the law as an excuse to not participate if anal sex comes up in conversation. That is, if you are not as adventurous as he, in that regard.
Now, I am usually an advocate for the adage "don't knock it 'til you try it," but in this case, I have to withdraw my advocation. Anal sex is not the sort of thing you just try, it is an event, a massive undertaking and a sex life-changing moment.
Anal sex, ladies, is not for the faint and certainly not for the woman who runs from pain. However, for those who have braved the initial shock of having something go in their out door, it becomes an exciting addition to their sexual adventures in marriage -- and I say "in marriage" because this is not the sort of thing you want to try with some guy who's just going to leave you in three months. No, this is strictly husband-and-wife, 'til death do we part stuff!
The orgasms alone may repay brave women for their dedication and, as with all fetishes and sexual practices, couples that participate find themselves further tied by their adventurous trusting of one another.
Breathe, relax and lubricate, brave ladies.