To stasrt with i came up with this when speaking to somepeople on msn although at the time i was unaware of what i was doing then i tried it in person to a group of people

I decided to just mess about when i was with some freinds and refer to myself as "The Archduke" or "Archduke (my name)" just to mess around
I also refered to myself in the third person

anywhome i was asked by a girl what makes me so royal
and i just said something like blah blah blah gods gift or birth right or something just born to be great

then i was told "your not royal"
me: how so?
her: because royals are ugly (not exact words but along those lines)
"blah blah blah realised i was being hit on"
her: so what does a archduke do
me: blah blah blah (cant remember what i said but it was not important)
her: oh really i guess that makes me a princess

blah blah blah happy ending and very fun + if i ever want to use this in future i just call the girl princess and voila

i was very suprised at how well that actually worked
i guess girls still like the childhood image of being the princess in the castle

give it a try