If Michael Douglas got cancer from oral sex I wonder what Maher got from licking himself?
No Michael Douglas got HPV from performing oral sex on a woman who had HPV...
or from kissing a woman who had oral HPV
or from smoking or drinking too much
or gay stuff though he doesn't strike me that way
it's kinda hard to say exactly...I think Michael probably likes the reputation of getting it from going down on women more than from smoking
Given that a 25-50% of mature women have HPV and 10% of men carry it orally too I'd wage if HPV alone was the culprit we'd sure see more than just a few thousand cases of this type cancer per year...a cancer easily caused as I said by tobacco use or heavy drinking alone...likely chronic pot too
all that said...I think HPV vaccine is a good idea for boys...my oldest has gotten it already