Stack 'em high

Scene 1:
Early morning, a kitchen in South London. A mum and three children are getting ready for school.
 
The Mum (let’s call her PB): Have you got your swimming bag?
The Boy (let’s call him Tom): Yes
PB: Are you sure you’ve got your swimming bag?
Tom: Yes.
PB: Ok, so you’ve got your swimming bag?
Tom: Oh Muuuuuuuum! [mutters something inaudible] YES!!
 
Approx one hour later: Tom arrives at PB’s desk …
 
Tom: Mum? You know my swimming bag?
PB: Er, yes?
Tom: It’s got all different stuff in it ..
 
Tom pulls out two Liverpool scarves, an LFC woolly hat, match programme, bottle of water and a copy of the Anfield Times ...
 
Me (for it is I!), [in a calm voice, through gritted teeth]:  Oh.  So, Tom, when I asked you if you had your swimming bag …
 
Tom: Yeah, but you never asked me what was in it ..!!!
 
Sigh ..