Disappearing Ink Pen Tube
https://technotink.net/treasure/?post_type=product&p=10311
Disappearing Ink Pen Tube. Item #: 21691. Spill it on a friend as if by accident and watch his face! The frown slowly changes to a smile as the ink completely vanishes in a few seconds. Brand New: As is, no returns. See photos for details and visual description.
