An affectionate nickname for one's Progressive friends, or for progressive attributes such as integrity, reasonability, and kindness.
To a younger sibling: "Sounds like your so-called friends have been using you. See if you can get some proggies in your life --they're not out to get over on everyone."
To a frantic victim of RWNJ media, promoting the benefits of letting people die for lack of health-care: "Sorry, but you've happened upon a proggie stronghold here. We live in --and care about --this world, not some RWNJ fantasy-land."
Political Tribalist: "F- You you proggie....always want something for NOTHING....why don't you get a life proggie??....sitting in your mom's basement.....HA!"
Anarchist: "You know, I think the progressives are wrong, dude, but why are you being such a douchebag?"
Conservative: "Yeah, I don't really think you're adding much to the discussion, Tribalist."
Political Tribalist: "Whatever, you proggie idiots...Why don't you go whining to your proggie mamas?...I WIN!"
Everybody: "Sigh, ok, whatever dude."