An extra hidden mickey

Littered through the Walt Disney World Resort there are hidden Mickeys. A sidewalk here, a mural there - mickey's silhouette is the inspiration for these architectural easter eggs around the parks and resorts. A book, 101 Hidden Mickeys is available at most gift stores, but it failed to mention the hidden mickey I found yesterday - a large sweat mark on a father's shirt in the likeness of the worlds most famous mouse.