Selling jeans

From Wiki Gonzalez

"Selling jeans" is yet another Primer running gag.

In Moneyball, author Michael Lewis sits in on a high-level meeting of the Athletics brain trust, discussing the players available in the 2002 amateur draft. At one point, an A's scout comments that one available player has a bad body type. Billy Beane, whose disdain for traditional scouting analysis is made clear, has a ready rejoinder: "We're not selling jeans here." Beane is looking for ballplayers, not clothes models or physical specimens.

The phrase is used on BTF to show you value substance over style, to defend a fat or awkward-looking player by calling out his baseball abilities, or simply to demonstrate that you know your Moneyball.