How do you ask a girl to do it?

Far less than 1%. I'm fairly certain a condom works 98% of the time, and birth control works 99.8% of the time. That means you have approximately a 0.004% chance of impregnation. Of course, those percentages are off the top of my head. That, however, is with proper use but isn't factoring in the spermicide condoms they have these days. Really that's a 1 in 25,000 chance.

Also, most "sex-ed" classes are really just telling you abstinence is the best way to go.

It's like 82% realistically and 98% if always used correctly for condoms, and like 92% realistically and 99.7% if always used correctly for birth control.


Of course, this doesn't mean anything if you don't know what the %s mean. They mean over a course of 1 year of regular sex, not for each time you have sex. So a 99% rate is once every 100 years, not once every 100 times you have sex.