Thanks, but too brief. No one can answe my Q & A???
My project is merely an English languange paper projest. but the lecturer said any topic that can educative people. I think is interesting since I can show some condom & some sex toy during presentation. (about sex toy, have to ask lecturer can show or not, not sure  ??)

Read this,http://www.avert.org/faq1.htm#q7

Does circumcision protect against HIV?
Research has shown that circumcised men are up to 70% less likely to contract HIV through sex. This is because the inner lining of the foreskin is thought to be particularly vulnerable to HIV. However, circumcision does not mean you cannot get HIV, it just means it's less likely. Circumcised men can also pass on the virus just as easily as those whose foreskin has not been removed.