I suppose I'd play by walking in various official buildings, politely ask to see some data that concerns myself, or some other people, and modify it to suit my wish. Then I would go meet some political leaders, and explain them why I am the theorician of the new socio-politico-economic theory adapted to today's world.
And then I would begin to toy seriously.
But in all honesty, if I had such a high Bluff score, I would start by trying to convince the cosmic DM I have an equivalently high score in Sense Motive.
And Tumble, just in case.
However, for a D&D character with such a high Bluffing capacity, I think everytime I meet a villain, I would convince him (or her) that I'm harmless and not worthy of his/her time, especially if his/her plans regarding me involved custody, torture, execution, or even merely tauntings. I would also add that modern villains do as all modern, sane, educated person and sacrifice ducks, goats or ox rather than those cute young virgin, who would be much better in my own care.
It would be fun to arrive to that result without having to resort to the usual violence and dismemberment.