Coco, DH said the same thing about Saul's lethal pencil. 
Returning to the 'pretty' remark by McClendon, it just seemed like an odd echo of Dar's emphasis on the teenage Quinn's good looks last season, and then the reference to never having forced himself on anyone this season by the lake. It's not an expression the average heterosexual American male tends to use about other men -- I was wondering whether we were supposed to intuit some gay inner circle with an interest in teenage boys, only that sounds (1) incredibly unlikely to involve a general in the US military/Black Ops CIA, and (2) like some homophobic conspiracy theory.
(Although I did also think it was pretty unlikely for a general to be running around armed on the street in fatigues, rather than directing things from behind the scenes...?)
I suppose the remarks on Quinn's good looks by other characters also highlighted for me one of the oddities of TV and film. Most lead actors in Hollywood films and high-end US TV like Homeland are unusually good-looking. but no one ever mentions this -- no one ever mentions how very beautiful Carrie is, or Farah, or Brody's wife, or Mira, or Astrid, or Hair etc, or for that matter Brody, Estes, Jonas, Carrie's lawyer colleague, the gorgeous Pakistani colonel played by Raza Jaffrey in season 4. It's just a given that the CIA and its allies and enemies are populated by extremely good looking people.