Green’s Dictionary of Slang

unbooted adj.

[a country person, who does not wear shoes]

(US black) naïve, ignorant.

[US]Mezzrow & Wolfe Really the Blues 219: I wrastled some shake-up last night with some unbooted wren, blowin’ salt and pepper till my hair hurts.
[US]Hughes & Bontemps Book of Negro Folklore 488: unbooted: Square, state of being a lane, a dull person. Rev. is unbooted.