fan insanity. meaning that you're a person in a fandom who is insane, or just insane about the fandom in particular.
by blubberfish23 February 2, 2017
The ability to use profanity so well, that those around you can't do anything but applaud your rudeness. Mainly used by bad drivers and high school students, although it has been mastered by thousands of people worldwide.
Bad driver: F**k you motherf*****r! You made me f*****g rear f******g end you f*****g a*s! C**t a** b***h!
High School Student: F**k a** c**t b***h.
Bystander: What pro-fanity.
High School Student: F**k a** c**t b***h.
Bystander: What pro-fanity.
by pacmanawesomepants November 6, 2009