Definition of galah ?

A galah is basically someone acting like a full-on goose. Aussies call you a galah when you’ve done something silly, ridiculous, or just plain spaced out. It comes from the bird that’s always flying into windows, so the vibe is chaotic energy with zero awareness. It’s not super mean—more of a friendly roast to remind your mate they’ve messed up again. If someone forgets the snags, loses their keys, or tries to do a u-ey in a tiny street, yep, that’s a proper flaming galah moment.

He forgot the snags again—what a flaming galah.