Always put on the condom before vaginal, oral or anal sex. The San Francisco AIDS Foundation warns that unprotected anal sex is the chief cause of AIDS transmission in America. Remember: if you engage in any penetration, always wear a rubber.
What if the unlikely happens, and a condom breaks? First of all,
it’s important to learn what a condom feels like when it tears by masturbating with the intention of breaking one (don’t use lubrication, for instance). After a few times, you will learn what it feels like, so if it should break during intercourse and the man has not come yet or the tear is near the base, he can immediately withdraw his penis, urinate, clean up and replace the condom. Do not douche as this can cause small tears which promote infection.