2. You had to use the Encyclopedia Brittanica for all of your school reports. Also, you know what microfiche is.
3. You used to play with Popples.
4. You know what Strawberry Shortcake and Rainbow Bright looked like before they got a makeover to look like a Kardashian.
5. Forget cellphones and text messages, you had beepers and beeper codes — 143!
For the rest of the list visit...http://www.parentsociety.com/parenting/todays-family/mom/25-ways-to-know-youre-in-your-30s/