I remember feeling upset when one of my closest school friends said she was fed up of having to ask her mum to take us places and always inviting me round to their house. She wanted to know why my mum never gave us lifts anywhere and why she was hardly ever invited to mine after school. The truth was I was embarrassed. Despite now living in the 'nice' side of town, we never had enough petrol in the car, and friends were only allowed round on payday, when there was food in the fridge and enough electricity on the meter. How could I tell her the truth?