I guess rftm and wtf are just considered rude? What about all of the other scatological words in English or any other used-in-Google languages (such as Quebec French)?
Here is the blocked_terms list:
dummy
keymaster
grayhat (Who has a gray skin color????)
# Black Hat black.?hat
# Black List black.?list
# Build Cop build.?cop
# Crazy crazy
# Cripple cripple
# Dummy dummy
# Frist Class Citizen first.?class.?citizen
# Grandfathered grandfathered
# Gray Hat gr[ae]y.?hat
# Gray List gr[ae]y.?list
# He \bhe\b
# She \bshe\b
# Him \bhim\b
# Her \bher\b
# His \bhis\b
# Hers \bhers\b
# Man in the middle man.?in.?the.?middle
# Master master
# MITM \bmitm(\b|\d)
# Native \bnative
# Red Line \bred.?line
# RTFM rtfm
# Sane, Insane \b(in)?sane(\b|\d)
# Sanity sanity
# Slave slave
# White Glove white.?glove
# White Hat white.?hat
# White Label white.?label
# White List white.?list
# WTF \bwtf