The idea is that we cannot avoid these words while the rest of our culture is saturated with them, and we cannot question them while leaving them unspoken, but we do not ourselves want to speak them. Others of the dichotomies are simply altered in any number of ways. Some are treated in a very Freudian manner. Some are questioned as desirable imagery for thinking about thought. A number of these dichotomies place one of the terms over and around the other.
Men is taken to mean both all people and non-female people.
This point would be as well made without the interweaving of the stuff about masturbation, but it would be less fun, even for those of us with strong doubts about Freud and annoyance with the idea that sex-talk always brings a naughty thrill. But I am slipping into a specific case of deconstruction, and you want a simple definition. Deconstruction locates certain crucial oppositions or binary structures of meaning and value that constitute the discourse of 'Western metaphysics'. A Deconstructive reading then goes on to show how these terms are inscribed within a systematic structure of hierarchical privilege, such that one of each pair will always appear to occupy the sovereign or governing position. Such criticisms can be discussed after reading Derrida.