Meet Sharpie. The nemesis of white boards and other solid surfaces.
Crap. Somebody, maybe my alter ego drew on my whiteboard with a sharpie. What do I do?
Enter the Hero!
Simply draw over the offending Sharpie with a dry erase marker. Wait 30 seconds.
Now simply wipe off with a cloth, tissue or dry eraser.
Enemies have united to become friends.