I'll be right back; I just have to powder my nose.
To temporarily leave the company of others, often to a restroom, for a brief respite from a crowd, to engage in private conversation, reapply make-up, etc
C'mon girls; let's go powder our noses.
powder one's nose
Hyphenation
pow·der one's nose
Turkish pronunciation
paudır wʌnz nōz
Pronunciation
/ˈpoudər ˈwənz ˈnōz/ /ˈpaʊdɜr ˈwʌnz ˈnoʊz/
Etymology
() Euphemistically identifies the purpose of a lavatory as a place to apply make-up.