"You spent how much of our allowance on cardboard instead of snacks?!??!"
"Actually, this looks kind of fun! Ooo what's in here?"
I was slightly concerned when we constructed it about whether Boo would fit through the doors.
"Hm, this is a little smaller than I'm used to..."
"But no need to worry, Mrs Two-Legs, us bunnies can always get through a smaller space than you expect."
A few weeks later....