Person (usually refering to a male though not gender bias) maintaining little to no decernable speaking skills often associated with one who fornicates with barn yard animels.
Dag yo, the slack jawed yokel jus done it to a pig.
also portrayed in a Simpsons episode to the song "some folk el never lose a toe and then again some fok'll, Cletis the slack jawed yokel"
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. PenguinBooks,1992. p. 38)