I strive to be curmudgeon...
cur·mudg·eon
kərˈməjən/
noun
noun: curmudgeon; plural noun: curmudgeons
a bad-tempered or surly person.
Origin
late 16th century: of unknown origin.
https://vimeo.com/blog/post/danny-devito-is-a-curmudgeon-in-curmudgeons
https://vimeo.com/159449591
Danny DiVito rhymes with Childish Gambino.