mulligrubs

[muhl-i-gruhbz] /ˈmʌl ɪˌgrʌbz/
noun, (used with a singular or plural verb) Southern U.S.
1.
ill temper; colic; grumpiness.
Origin
1590-1600; earlier mulligrums, apparently alteration of megrims
Contemporary definitions for mulligrubs
noun

See mubblefubbles

Word Origin and History for mulligrubs
n.

"fit of the blues," also "colic," 1590s, mulliegrums, fanciful formation.