666

Hexakosioihexekontahexaphobia

Yes, that is what you have when you fear the number 666. Heck, even that word is fearful. Try pronouncing this fearful word only :)

Wikipedia says that:
Hexakosioihexekontahexaphobia is the fear that originates in the the Biblical verse Revelation 13:18 which indicates that the number 666 is the Number of the Beast, linked to Satan or the Anti-Christ. Outside the Christian faith, the phobia has been further popularized as a leitmotif in various horror films.

Hexakosioihexekontahexaphobes will strongly avoid things related to the number 666. A prominent example is of Nancy and Ronald Wilson Reagan who, in 1989, when moving to their home in the Bel-Air section of Los Angeles, had the address of 666 St. Cloud Road changed to 668 St. Cloud Road.
So, what do you say??