Hide and go seek

"Could you put my shoes on for me please?", says the 3 year old girl to my son, Jake, in the middle of a child development class in year 12.
After putting on the first one, Jake looks around and says "Where is your other shoe?"
"I don't know."
Of course not. Why would she know. That would be too easy.

"Where were you playing when you lost the other one?"
She leads him over to the playground, and they search for 5 minutes.
"Does anyone else know where a spare shoe is?" Jake asks of all the other children.
One boy pipes up: "I know! I know!"
"Where is it?"
"I can't tell you."
"Why not?"
"I hid it!" he says, with a devious grin on his face, happy at being so clever.
Jake, in another display of his seemingly infinite patience, asks him calmly, "Why did you hide it?"
The boy, even happier, says something that an adult could never invent in a million years.
"I wanted to play Hide and Go Shoe!"

All the other children, upon hearing this, take off one of their shoes and shout, "Can we play too?!"
"How about we play that, not now!" says Jake, and diverts them to some other game, cleverly avoiding all the confused parents wondering why their children are coming home limping.
They eventually find the other piece of footwear hiding in a closet, and cover her bare metatarsals before she starts to develop scoliosis.