I might shouldn't worry about it, but I do.

source: 
Mishoe
Entry: 
25
Example: 
I might shouldn't worry about it, but I do.
Modal 1: 
might
Modal 2: 
shouldn't
Gender: 
Female
Race/Ethnicity: 
White
Age: 
50s
Level of Education: 
Unknown
Home Community, Town, or State: 
Unknown
Location Collected: 
SC/ NC (Unknown)
Year: 
c1990
Relation to Addressee: 
aunt to niece
Medium: 
Spoken
Sentence Structure: 
1.2
Status: 
Naturalistic