This tool was used in the ancient times to hide ones spelling mistakes. It originated in a darker world where "undo" and "ctrl z" was not known and the writer physically needed to paint over your errors if they did not want receive the stigmata of crossing out words.
This video will just confirm what you alreay thought. There is white goo inside and some metal plus a hole in the front to dispense the goo.
Do you want another meh disassembly?
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