When someone says "Merry Christmas" or "Happy Holidays"...
A normal person: Responds in kind
A JW: Says "Thank you" or launches into a speech about Christmas' pagan roots
When a couple is celebrating their wedding anniversary...
A normal person: Congratulates the couple, wishes them happiness in the future or perhaps comments on what a great couple they make.
A JW: Congratulates the couple, remembering to mention that their happiness is blessing from Jehovah and what a great example their marriage is to the congregation.
When a friend gets a promotion at work...
A normal person: Congrats, that's great news!
A JW: Are you sure you'll be able to make your meetings still?
When someone passes away...
A normal person: Doesn't say much, just listens to the person.
A JW: Launches into a speech about the resurrection