I guess this means you should be using industrial-grade condoms when using the outie as an innie. While looking at gay men, there shouldn't be a meaningfully statistical difference between gay and straight anal sex. Be careful out there, poop-chuters!
AIDS drugs haven't changed HIV risk with anal sex
http://www.reuters.com/article/idUSTRE61L4W920100222
AIDS drugs haven't changed HIV risk with anal sex
http://www.reuters.com/article/idUSTRE61L4W920100222
