Hunter S. Thompson used this phrase often to indicate extreme
horror in the future and present tenses. According to Chapter 1
of his book "Better Than Sex: Confessions of a Political Junkie
Trapped Like a Rat in Mr. Bill's Neighborhood", the phrase comes
from H. Wayne Morgan's "Yesterday's Addict". Morgan says:
"...while fearing and loathing addiction, many late-nineteenth-
century people sympathized with addicts."  fd leak = F = feature
fear and loathing n.  [from Hunter S. Thompson] A state inspired
by the prospect of dealing with certain real-world systems and
standards that are totally brain-damaged but ubiquitous -- Intel
8086s, or COBOL, or EBCDIC, or any IBM machine bigger than a
workstation. "Ack! They want PCs to be able to talk to the AI
machine. Fear and loathing time!"