What is Y'ins?
A synonym of "y'all." Most likely came from a contraction of "you ones" or something like that. Often has other contractions appended onto it, such as in "y'ins'dn't've" (you all would not have). Used in rural America.
If y'ins'dn't've let the sheep get out the yard, I'dn't've had to go back to that damn wretched mother of yours.