Paige West has some excellent examples of mansplaining in 2013. She’s an expert in New Guinea culture, and it’s amazing how many men take the time to explain to her how New Guinea works.
But the best part, I think, is that the very first comment, from someone signing himself “Male Academic”, takes pains to explain at length that maybe this isn’t actually sexism. He’s obliviously mansplaining!
Let me just say that I, a man, have given a great many lectures in the past year, and I have had people disagree with me, sometimes vigorously, and I have had people add informed perspectives from their own expertise, but I have never had anyone treat me as a callow, infantile know-nothing who needed remedial instruction in my own field of expertise.
That would only happen if I had breasts sucking all the intelligence out of my skull, apparently.