The was another good exchange just before the one above:
Boss: "Enos. Enos Strate. This is J.D. Hogg, calling Enos Strate. Come in."
Enos: "I'm all ears, Mr. Hogg."
Boss: [To himself] "And no brains."
It was in 'Play it Again, Luke'.
Boss: "Do you read?"
Enos: "Oh, yes, sir, Mr. Hogg. I read every chance I get. I like boy-dog stories best. The one about Patches at play was my favorite in grammar school."
Boss: "I can't believe this."
Enos: "It's about this dog named Patches. He's got one brown eye and one blue eye, and his master named Christopher, ...and they was out playing with the squirrels and the cows on the farm..."
Not sure which episode. I think (Season 6 Cooter's Confession) But remember when Boss ask Enos "Do you read boy?" Enos starts naming off books that he has read. Boss says to himself "I can't believe this." He meant "You read boy?" As in "Do you understand?" Not "Do you read" as in literally read.
ACK!! Its the Grinch!!! Wait a second... I'm the Grinch!! You all better keep a really close eye on your Christmas gifts and roast beast!! *evil grinchy laugher*