Permanent Marker

From Homestar Runner Wiki

Strong Bad uses this black marker in two emails: in haircut it is used as a "Light Pen" to suggest possible eyebrow styles. In car Strong Bad uses it to trick out his fist, and then imprint Homestar Runner's forehead with a customized message.

It has been noted that the "Light Pen" Strong Bad uses is left-handed. Many right-handed people don't realize this, but almost all pens and pencils are manufactured for right-handed use in that the text printed on them appears right-side-up when used with the right hand, but upside-down when used by the left hand. (This does not affect the way pencils or pens are used; only the orientation of the text printed on them differs.) This observation is of highly dubious relevance, but is interesting nonetheless.