Lighthearted!
If you stop someone with twins in public and say "double trouble" or "you must have your hands full" why do you do it? I've had this non-stop and I was just wondering why. Also, do you realise that it's the most unoriginal thing to say to someone with twins?
I'm always super friendly to everyone who inconveniences me stops to talk to me whilst I'm minding my own business but it does get tedious when each person says the same thing and I wonder if they realise they're the 20th person to say it that day.
Again, lighthearted!