A logical fallacy is a logical argument which is incorrect. It's almost a tautology as an expression, because fallacies are based on incorrect information which provides incorrect logic or its suppositions. The expression, however, is used as a contextual reference describing an argument, describing that process. A logical fallacy produces a premise and develops its logic fallaciously.
Examples of Logical Fallacy:
All giraffes have four legs. My gerbil has four legs. Therefore my gerbil is a giraffe.
The sun rises in the sky. Therefore the sun is moving relative to the Earth and the Earth isn't moving at all.|