Yiddish: The eggs think they're smarter than the chickens.

SOURCE: Bernstein, Jüdische Sprichwörter und Redensarten.
Literal translation:  The eggs want to be smarter than the chickens.  Compare:

The eggs are teaching the chickens. | Di eyer lernen di hiner. | .די אייער לערנען די הינער

SOURCE: Stutchkoff, Der Oytser fun der Yidisher Shprakh

די אייער ווילן זײַן קליגער פֿון די הינער.

Di eyer viln zayn kliger fun di hiner.

The eggs think they're smarter than the chickens.