Isn't it obvious? I'm hiding from the IRS.

Description: I'm inside your walls. How I got inside your wall: 1. Wait until you fall asleep. 2. Look for the weak points in your wall. 3. Use marker to mark how big the hole will be 4. Carefully use a hammer and nail to quietly shape the hole. 5. Clean evidence. 6. Get your repair patch. 7. Attach the repair patch to the inside of the wall but leave a small opening. 8. Paint over it. 9. Hop inside. 10. Attach the part you left open from the inside.