When someone "explains" something to another person about a topic they are already familiar with/understand. This is typically done in a
condescending manner under the
pretense that the speaker knows more about the topic than who they are speaking to, i.e. they are
subordinate.
1) Explaining the rules of poker to a poker dealer
2)Repeating a point back to someone in your own way, even if they just said the same thing
3)Telling a person that you know more about something because of blank, even though they are a professional/have a degree in the field that you do not have
Sidenote: it is okay to know a lot about a topic and make this known in conversation, but assuming that you know more than someone else, not accepting if
you are wrong, not accepting that they may simply be more knowledgeable, and/or doing so in a
condescending manner means that you are
mansplaining.
Note: this definition and examples were built together by both a man and a woman