Something, such as a thought or conception, that potentially or actually exists in the mind as a product of mental activity; eclusively the product of male homosapiens. Mandeas normally occur immediately after the completion of a man-task or whilst a man is in temporary posession of a new power-tool. Mandeas are motivated primarily by laziness, partially by curiousity and underpinned by a primal need to do manly things. Mandeas are amplified by the presence of additional men and absence of females.