1st_ 'XXX' is the way triple x is written, which today identifies pornographic content in a work or medium. The origin seems to be in the American film rating, which had the 'X' for films with sex scenes; but they did not rate porn, so that industry multiplied the equis as a promotion. 2nd_ By the previous one, the internet domain was assigned' . xxx' for sites with pornographic content. 3rd_ As an emoticon, 'xxx' means "kisses", and 'XXX' "hardcore kisses". 4th_ XXX is "thirty" in Roman numeration. 5o_ 'XXX' is an abbreviated way of referring to triple x syndrome (chromosomal difference in a superwoman). 6th_ Name of films, novels, bands and musical themes.
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