I need your address so I can send you a Christmas card
What it says. If you'd like a Christmas card from me, add your mailing address to your Patreon account, and I'll send you a card.
Edit: courtesy of Wilhelm, here's how you do it!
1. Click the profile icon in the top right and select "Your Pledges" from the drop down.
2. In the list of pledges, find Tony, and on the right side click "Edit Pledge or Shipping Address".