XXX refers to Vin Diesel's 2002 action/adventure film "XXX". Gamer tags during the early 2010s in the MLG era uses xX or xxX often with underscores opposing beside their names. It also means "Rated X". A rating placed in pornographic shows and films suggesting that only 18 years old to above are allowed to view or they are not for general public because of their highly mature content.
