You know you in fact look old when

1. salespeople of computer-based tutoring software in shopping centres stop you & ask, "do you have any children in school" when you thought all along that you yourself barely look like you're out of school
2. you're disgruntled about most things (or does that mean you're a US postal worker?)
3. your optometrist prescribes you progressive lenses (luckily that's my boss, not me :D)
4.