Now that you’re all grown up and mom’s not there (assuming you either live away from mom, or she never goes to the basement where she lets you stay), you can get a gadget to nag you when you’re slouching by the laptop:
USB Posture Alert Reminder
Yes, thanks to modern technology, for $22 plus shipping you too can get nagging like mom used to make.
Hat tip TigerHawk, who curiously thinks this is “Cool”.