4. Not leaving room at the top. It's apparently news to four out of 10 condom users that before putting it on, you need to gently squeeze the tip of the condom to remove any trapped air and leave space for the sperm. Otherwise, the condom's more likely to break.
5. Putting it on wrong. Don't you hate when that happens? About 30% of people put it on inside out and don't realize that an inside-out condom is more likely to slip off. The safest thing to do? Start with a new one. The right way: The condom should look a little like a ski cap with the bottom edges rolled up (not under). The cap should fit over the penis so that the brim unrolls easily down the shaft.
6. Slipping off during sex. To find a good fit, buy a variety of styles and sizes (there really aren't that many choices) and try them at leisure. Remember, natural lambskin sounds nice and can prevent pregnancy, but it doesn't protect against the viruses that cause AIDS, hepatitis, and herpes. Only latex can do that.
7. Taking the condom off too soon. Not a good idea. For the 15% of men who report doing this, losing an erection is a big reason. But erections can come and go during sex; besides, ejaculation can occur without an erection, bringing with it all the risks of pregnancy and STDs.