He takes his saving very seriously - pennies must go into their slots one by one, the job never rushed and of course all of this saving business must be conducted with the bottom lip sticking out. It's very serious business, don't you know?
I should also note that I 'helped' to put coins in the slot. I was so rushed in my manner of coin slotting that a 20p piece missed the slot. Roman spotted this, looked at me in complete horror and said 'Muuuh-meee!' in a tone that suggested I should take a step back and learn from a pro coin slotter.