Spencer Hall mentioned Thursday the need for Young John Brantley to have a nickname. While nicknames cannot be forced (remember Chris "12 Gauge" Leak?), it doesn't hurt trying.
I'm on record with Johnny Guitar, for the blues man and Pearl Jam lyric. My other pick would be Handsome, as in, "Look at that Handsome sonofabitch throw the deep ball!" Johnny B. Goode is old and John-John opens a barrel of bad karma. You could also pick named based on former UF quarterbacks; The Catholic Tebow, the White Chris Leak and, of course, Sex Cannon 2.0.
Drop your ideas in the comments.