Aunt Bea says his stubble somehow now makes him look like a Thinker. He decides to keep it.
"Seems like the me that's really me and was bein' held back by the I that I am is comin' out all over my face." But he's a little too self-conscious. "That's got to be brung out."
-Andy Griffith Show, episode 196 (Season 7, ep. 14, "Goober Makes History")