aflap

adjective3

1. •
   Flapping.

   • and she / A vulture feasting with foul wings aflap — 1894
2. •
   Filled (with something flapping).

   • They walked up Main Street, which was all aflap with American flags […] — 1908
3. •
   (informal) Showing excessive excitement or anger.

   • “First he says we isn’t welcome, then he’s all aflap cause some of us is gone.” — 1977