JFTHOI stands for Just For The Hell Of It.
Synonyms: JFTHOI (Just For The Heck Of It).
This quote was often used by a """'very well-known, intelligent'""" book character, Holden Caulfield from the book "Catcher In The Rye". Holden was a teenager who always did some retarded things JFTHOI.
Any person: 'Why did you create this article in Encyclopedia?'
Me (the author): 'JFTHOI'