A documentary that is misleading, often using slight of hand and statistics, purposely designed to fox* you.

*Fox = To trick or fool by ingenuity or cunning; outwit. To baffle or confuse.

Note: It is often incorrectly thought that 'foxumentary' came about as a disparaging term for documentaries seen on the Fox network. This is not the case, and all networks my put out foxumentaries. It is merely a coincidence that the fox network is perceived by many as putting out nothing but foxumentaries.