Someone crashed into someone else, and they both broke into giggles. I stopped to listen, wanting to go back down to meet them. It sounded like they were looking at a bookshelf full of unusual objects.
"This stuff is amazing."
"We could sell it and make a lot of money!"
"Shhh! We're not going to sell it!"
"But the moneeey! Moolaahs! Moo-laah-laahs!"
"Shut up!" And they broke into giggles again.
I smiled at their stupidity. When Katie introduced me to the group, she warned me about their silliness, but it just made me wish I could be silly with them.