From Wired How-To Wiki

About 40 percent of infertility issues in couples are due to male infertility. Even with these compelling statistics, men are still reluctant to go to the doctor to deal with the whole question of fertility for a variety of reasons — awkward conversation in the reception area, waiting sheepishly among other semen-holding guys, the possibility of being caught by familiar faces while stepping out of the clinic, to name a few.

Confirming your virility (or...