Those are all great.
I most often get people saying things like: "oh you're so lucky" and "oh I hope I have twins" or "I wanted to have twins" lol
The comments I love the most are from the adults who are twins themselves. Most come up and talk about how close they are to their sibling.
Twins rock
[they may nearly make me crave a padded room...for ME!...some days, but I wouldn't trade them for the world
]