In Fable 2 for the Xbox 360, there is a demon door in Bower Lake that you can open to gain the Lucky Charm augment.
To open the door, you’ll need the following expressions: bloodlust roar, blow kiss, dance, fart, growl, laugh, middle finger, point and laugh, vulgar thrust, and worship.
The demon door will pause and ask for a specific expression, so do each expression it asks for to make it open.