No. 109 - arriving mail art "Wofür mag das gut sein?" from Uli Grohmann (Germany)

No. 109 - arriving mail art "Wofür mag das gut sein?" from Uli Grohmann (Germany) - a funny toilet paper issued envelope with a piece of toilet paper inside, decorated with two half skulls with the sentences "You know it" and "I know". Thank you very much.