The same meaning as Willy Waving but for woman. DM
An expression of showing off.
"Rebecca is fanny flapping about £5k sales this month."
A person who is scared or the flaps of a fanny
I swear Marcus is such a fanny flap
Or
Her fanny flaps looked like a subway ham baguette
A term that can be used as "dick" or "cunt"
Cunt
Dickhead
"Did you wash my socks you fanny flap?"