The boy's empty yokel-like expression.    From Wordnet, Princeton University. 

The men stared with blank and yokel-like eyes at him.    From Wordnik.com.  [The Red Badge of Courage] Reference

Velasquez clearly inspired them; but there never was in his work any of the noble delicacies of the Spaniard; it was always nearer to the plainer and more -- forgive the phrase -- yokel-like eloquence of Hals.    From Wordnik.com.  [Modern Painting] Reference