How well do you know your stuff on sex?

See how much you know on the famous word SEX.

1 How much sperm does it take to get pregnant?
2 When does an erection occur?
3 What gives the best meaning to the word sex?
4 When is it the best time to have sex?
5 What statement is true?
6 Whats best to do before sex?
7 Whats the worst turnoff during sex?