What does this mean?

Apparently, kids are having less sex.

Now, I'm divided on this issue. The young people surveyed report that they are both having less sex, and those who are sexually active are practicing safe sex more. I suppose this is all for the good. But then there's this:

For the first time since the government began its National Survey of Family Growth in 1973, more girls (47 percent) say they have had sex than boys (46 percent)

Now, I'm no mathematician, but given a roughly equal division of the sexes, doesn't this mean that a) there's an increase in teenage lesbianism, or b) some boys out there are being passed around like party dip?

I'm not sure which of those possibilities is more interesting - certainly, if it's B, then there's potential for serious weirdness. I mean, what happens when men have to keep from getting known as "fast"? When all the girls start trading dirty stories in the locker room about deflowering the boys in the back of their mom's cars? Surely this is a sign of the apocalypse?