My buddy just made a comment on his Facebook page about a project in my field of work. Turns out, it was even a project my company is working on. I made a joking comment back to him. One of his buddy's made a very uneducated comment about it. Without being smart alec or condescending in any way, I explained a little bit about it to him. Of course he wanted to argue, so I simply explained it's what I do for a living and I was just trying to help explain the need for the project. He posted a link to an opinion article from the internet to prove to me that I was wrong. He got smart alec about it. I kind of chuckled and told him I thought my experience in the profession might count for a little more than reading an opinion article on the internet.
Love it. People never cease to amaze.