I might could farm.

source: 
LAGS
Entry: 
428
Example: 
I might could farm.
Modal 1: 
might
Modal 2: 
could
Gender: 
Male
Race/Ethnicity: 
Black
Age: 
62
Level of Education: 
None
Home Community, Town, or State: 
GA (Colquitt)
Location Collected: 
GA (Blakely)
Year: 
1971
Relation to Addressee: 
subject to fieldworker
Medium: 
Spoken
Sentence Structure: 
1.0
Status: 
Naturalistic