10 dumb mistakes that can get her pregnant.. [Read]

3. The Mistake: Your hands are sweaty, so one of you tears the condom package with your teeth.

The Potential Damage: Using items like knives or scissors—even your teeth—to open a wrapper will make it very easy to mistakenly poke a hole in the condom. (Inone study, dudes who did so were about three times more likely to encounter breakage.) Think about it—do you really want sharp objects coming anywhere near the super-thin barrier that stands between you and fatherhood?