Female computer users (particularly middle-aged or elderly ones) are often used as a hypothetical or even actual test of ease of use, on the assumption that if such a person can use a program, anyone can. No phrase expresses the meme of female technical ineptitude more neatly than "So simple, even your [grand]mother could do it." This is a very commonly encountered form of condescension and is a frequent trope of sexist advertising portraying technical products as easy to use.