Photo’s circulating of Egyptian Sphinx covered in snow are a hoax: in reality photo’s from a miniature replica in Japan.
The Kruger-Dunning effect is rampant on internet fora.
J. Kruger & D. Dunning (1999), Unskilled and unaware of it: how difficulties in recognizing one’s own incompetence lead to inflated self-assessments. J Pers Soc Psychol. 77, 1121-1134