Sharpie Liquid Graphite Pencil on August 10, 2010 Get link Facebook Twitter Pinterest Email Other Apps The guys at Sharpie have reinvented the permanent marker with their liquid graphite pen. The Sharpie Liquid Pencil writes like a pen, erases like a pencil, and becomes permanent after 3 days. Woohoo! Available in stores staring September 2010. [via]