The male art of explaining a concept in such basic terms that even a woman could understand it.
So I was man-splaining to my wife that toothpaste is best squeezed from the bottom and not from the middle of the tube.
A term a woman uses when she feels that she is losing an argument to a man and takes the cowardly route of the victim card.
Her: What, those girl-power memes I post every day are a way of my compensating for the lack of confidence I have in myself? Why don't you shut up and quit man-splaining it to me?
When you've run out of women to mansplain to, so you resort to men instead.
"Did you happen to attend last night's amateur radio club meeting?" "Yes, a lot of man-on-man-splaining."