It means everything you buy for the eldest, you need to buy for the youngest. I am being honest when I say I was not aware of this.
My eldest is a huge football fan and every sports top he buys, there is demand from my youngest that he have the same. I am not saying he is spoilt, far from it as he lives on seconds from his elder brother. The trigger was when our youngest took his older brother’s football top and put it on, only it looked like he was wearing a skirt and he refused to take it off.
This weekend I made a “school-boy error”, I brought my eldest a wallet and when he got home to show his mother, the first reaction came from my youngest:
Where’s my Wallet? I want the wallet! It’s mine!
My youngest walked around all weekend with a few coins in his hand, looking to slip them into a wallet which he doesn’t have. At that point I realised, if you are going to buy something, make sure you buy two of each, just to keep the peace!