Old peoples conversation

You know how older people are with technical devices. They all have mobile phones these days but don't know much about how they work, so one day my friend got a phone call (well, not really but his phone rang) from his Mum, overhearing the following conversation: Mum: "S, sit up for gods sake!". Dad: (mumbling) "Leave me alone!". Mum: "Sit up! You're always like this when you've been down the pub with your friends". Dad: (mumbling) "Just leave me alone!". Mum: "And you know you shouldn't eat brussel sprouts, you're always farting!". Dad: (mumbling) "Stop bugging me". I guess it's one way of sharing your daily life with your kids...