When The Big Daddy and I got married, he was a graduate student and I was a loan processor for the local bank. Four years into said marriage, The Big Daddy received the Big Diploma.
From that point on, he became an expert on everything. On and on he'd spout about any subject, until one time he got up into my business one too many times with his pontificating. So I said, "Ever since you got that degree you think you know everything. You're being a real asshole."
To which he replied, "That's Dr. Asshole."
Up until that point, I could throw him a snark bomb, and he'd kind of kick it around and not do much about it. This time, he pulled the pin and lobbed it right back at me. The Man had definitely graduated.