The context is the set of circumstances in which a fact is situated. In other words, is everything that surrounds physically and symbolically to an event. Includes time, location, environment, the theme, the State of mood, etc.Being out of context means removing or leaving the matter or circumstances that it is to refer to something else that has no relationship.
Is can understand in a conversation a person says something that not has that view with the theme that is addresses: is says this out of context; Another idea is that they are named logical fallacy that a piece of text is extracted from a paragraph in such a way that distorts the original meaning of the text in question.
