Apparently, oral sex is all the rage among some teenagers. They consider it a way to 'stay a virgin' while having their fun. Somehow all the vaunted 'sex education' they get isn't helping. They think they're 10' tall and bulletproof, so they'll never get any of those nasty STD's.
Just another legacy of x42.
Yes, someone failed to tell the germs that "oral sex isn't really sex." Stupid germs.