I watched the terrible Emoji Movie two years ago. It always seems to come back to me each Christmas time. And even after all this time, I still can't stop thinking about it. Not because of the awful ...

Affectionate and aggressively earnest, these follow-up messages — dubbed “millennial thank you notes” — are flooding group chats and inboxes with a tidal wave of feelings.

What seems friendly to one person can come off as offensive or confusing to another — especially across age groups. View on ...