Superman to Elaine, who is standing on our bed: Be careful Elaine, you're getting close to the edge.
Elaine grins and immediately inches closer to the edge, checking for our approval as she goes. We're ready to break her fall if necessary but we don't stop her. Finally the mattress bends and she slowly slips down onto her bottom and slides off onto the floor. She stayed in perfect control of herself the whole time and is very proud.
I love that kid.