Go to your window. Open it. If your window does not open, exit your building.
Then yell, as loud as you can, "GibbleGibbet!" Repeat three times. Someone will show up. We promise.
GibbleGibbet isn't in a physical location. It's more a state of being. You have to reach a point of sufficient gibblegibbet-edness.
However, if you need to contact someone face-to-face, see our Contact Us page.