Last night we had dinner at our friends house. After dinner, K and her friend, A, disappeared for a period of time. When they finally came downstairs, they were covered in marker. K had a full beard and mustache on her face -- red. They had spots on their stomachs, backs, necks, and legs. K went so far as to color her legs, which you can see here. Most of the marker was washable and came off simply with a wet paper towel. The marker A used to color K's back was not washable. She's going to have orange dots on her back and neck for some time.
We've created a new rule in our house: no drawing with marker on your body.