be in/get into a flap
be in a flap
To be in a state of panic or frenzy. Mom's in a flap about this dinner party, so you better go help her.
See also: flap
get in(to) a flap
To enter into a state of panic or frenzy. Mom, I'll help you with getting dinner ready for the party, OK? So don't get in a flap about it—everything will be fine.