I sometimes feel like the only one on earth who still uses euphemisms, because other people treat them as so dishonest (even when they AREN'T). So it's nice to hear "powder room" once in a while!

Columbo uses powder room in a few episodes.

And in DAWN'S EARLY LIGHT, he hesitates for a moment to use a men's room term (one that isn't even slang) when talking to an army officer! Which, again, is fine with me, because nowadays people can't LET GO of the bathroom slang for any length of time!