Anal sex or anal intercourse is generally the insertion and thrusting of the erect penis into a .. Reports regarding the prevalence of anal sex among gay men and other men who have sex with men vary. When asked what techniques they used in their last ten sexual encounters, lesbians in their 30s were twice as likely as. If you want to learn more about how to have anal sex, there's a very good book that I'd like to recommend called. We'll show you how you can reduce your risks for contracting HIV and other sexually transmitted infections (STIs) while enjoying a healthy sex life. Anal sex.