Correct me if I'm wrong.
But isnt most the thrill of being blown, that someone else is doing it?

I mean it can be a form of foreplay, or a sexual act in itself.

If there's someone else willing to do it for you, why would you go through all the pain and agony of 'training' yourself to do it?

You could also save yourself a chiro visit and buy a fake mouth!
I'm sure the pixie sex toy site has plenty on offer.