OMG! Ummmm..... This is no way good! That's my specialty!! http://news.yahoo.com/s/ap/20080202/ap_on_he_me/hpv_oral_cancer;_ylt=AkDNisXtCekdKn3D.Au3IX2s0NUE
So do blow jobs. About 10 years ago there was a lot of alarm because suddenly young women were turning up with throat & mouth cancer. There's a lot to be said for having one partner who you trust.