When it comes to sex, you gotta be willing to get nasty as fuck...

[Cream of Caulk]

OMG, the mouth is the worst. You really need a lot of Vaseline when you give a bj for an hour with a non lubricated rubber. I mean nobody wants to put a nasty dick in the mouth uncovered. But the Vaseline is for afterwards because the the dryness and soreness takes a while to go away. Blah, unless you want a mouth full of petroleum, bad enough it's already full of cock. I think cock mouth is the hardest to conceal though.