The tendency of some men to mistakenly believe that they automatically know more about any given topic than does a woman and who, consequently, proceed to explain to her- correctly or not- things that she already knows.
Woman A: When he started mansplaining to me what it really meant to be a woman in the 21st century, I got up and left.
Woman B: Really, what else could you do?
Woman B: Really, what else could you do?
by miriald January 08, 2011