Jason Dufner was minding his own business, being a normal sports fan on Twitter in late December, when he made an innocuous comment about the NFL.
Then some guy with apparently nothing better to do than be snide responded, "When's the last time you won?"
It was a shot at Dufner's record since the laid-back Alabaman won the 2013 PGA Championship and made "Dufnering" a verb and a social media sensation. By late last year, he'd gone winless in 43 PGA Tour events.
In his usual droll but direct manner, Dufner offered three words to the smart aleck — "week ago, clown" — with a photo of him and Brandt Snedeker holding the trophy for...