Make it last all week
Sarah bought Theo a bottle of juice at the supermarket on Thursday. When they got home she told him "You have to make it last all week"
Fast forward to last night when he walked into the lounge and just, apropo of nothing, mentions to Sarah "The week starts on Sunday you know!". Then mentions to Sarah about how kind he's been, sharing his juice with Bethany.
Took a little while to realise he's already drunk all his juice.