I think it's advertising a certain type of biscuit liked by boys and dogs.
There's a large drink in a glass.
I wonder what he has on his fingers. He's licking something. They don't look like sticky biscuits.
He's got a hole in the knee of his trousers because he's been playing out with other boys, climbing trees and things. His mum is cross because he has holes in his trousers. "You can't have any lunch today. You have been so careless with those dungarees. Those were new last week".
He went into the cupboard and got the biscuits. They look like chocolate biscuits and down his left cheek he has a smear of chocolate - more than a smear, he is covered in it.
[Dog] "Can I have one please?" The dog is sharp and bright. He is called Max.
The boy is called Christopher. "He is like my brother."
He gives the dog a biscuit.
I think one of his parents has come in and found him with the biscuit tin. "What on earth are you up to now?"
"I couldn't help it, mum, I was just so hungry because you didn't give me breakfast!"
But boys will be boys.