I get so confused on this one. I bumped in to the parent of an old friend who said ‘hello you’ in a friendly/upbeat tone. Wasn’t sure if she’d forgotten my name, as I hadn’t seen her - or my former friend - for a few years. Could be useful for me to use if is the latter (forgot someone’s name), as I am always bumping into people who’s face I can never put a name to.
Vote:
YABU - Affectionate
YANBU - Forgot someone’s name