After they are inside, they will want you to close the top.
Once the top is closed, they will want to peek through the side hole.
After a bit of peeking, they will want to open the box a little.
They will think this is hilarious.
It is so hilarious that they will fall down in the box laughing.
They will hug and kiss and laugh really loud.
This will cause one twin to get out of the box.
Once he is out of the box, he will want to get back in.
Once the twins are in the box, they will want you to close the top.
If you give some twins a box...they will play with it for over an hour.