1. The study of the tricking phenomena with reference of origin, growth, reproduction, structure, and behavior of those imposing a trick and those on the receiving end of a trick.

2. The study of tricks used in a specific region.

3. trickological phenomena of an organism or a group of organisms performing tricks.

1. Blue Monday is the most depressing day of the year, calculated by Dr. Cliff Arnall, a researcher at the University of Cardiff's Center for Lifelong Learning.
Factors used to calculate the date included weather conditions, debt level, time since Christmas, time since failing our New Year's resolutions, low motivation and feeling the need to take action.

In 2005 the date was calculated as January 24th, in 2006 it was January 23rd, and in 2007 it was January 22nd.

2. A song by the hard rock band Orgy from their album Candy Ass.

the act of fooling the masses. saying one thing, but meaning another for ulterior purposes. propaganda, deceit