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.
I had this awesome mandea, It takes 30 mins to cook a pie at 160 C, so if I use petrol and a blow-torch, it only takes 3 mins.