Well Rogue you’ll find yours is the last entry. LOLEven Wiktionary can't get it right. You'd have thought they would have checked with Wikipedia.
I was born way up North but I have lived in the South long enough to know that when someone tells you to "take a powder" they assume you have a headache (Maladie de la tête) and you need to take a BC Powder.
From Wikipedia, the free encyclopedia
Wiktionary: take a powder
take a powder
(idiomatic, US, colloquial) To leave in a hurry; run away; scram; depart without taking leave or notifying anyone, often with a connotation of avoiding something unpleasant or shirking responsibility.