Yiddish: He's threatening the geese in the attic.

He's making empty threats.  SOURCE: Stutchkoff, Der Oytser fun der Yidisher Shprakh.  Variation:

He's threatening the bedbugs.  |  Er strashet di vantsn.  |  .ער סטראַשעט די וואַנצן

ער סטראַשעט די גענדז אויפן בוידעם.

Er strashet di gendz afn boydem.

He's threatening the geese in the attic.