Turn Your Douchebag Radar On
If you want to know what a man’s like, take a good look at how he treats his inferiors, not his equals.” ― Harry Potter and the Goblet of Fire
Meet someone you aren’t sure about? Do you suspect them to be dishonest? Disloyal? Then monitor how they act around others, particularly folks who might have a lower social standing than they do. Their true colors will certainly shine and you’ll be privy to their true nature.
(Note: This can also be a gauge if you’re trying to figure out who to vote for).