1can't read anymore without reading glasses
2you disapprove of the clothing young people wear, and their music, too
3someone calls you ma'am or sir
4your hair starts going white
5you are stunned when a young person says Who are the Beatles?
6Need to start using a cane
7you wish you had not thrown out your old toys, clothes, etc. as they are now worth billions of dollars
8when your parents die
9you move to Florida
10the doctor/police officer/etc. look too young to be qualified to do these jobs
11you are done for the night by 10 pm at the latest
12there are too many new-fangled devices to learn how to use
13Your back goes out more than you do
14You can't remember what you said to someone yesterday, but you can remember television commercial jingles from 1960
15You get in a lot of pain recently
16Someone calls you an old fart!
17(for women) you find yourself shopping at Talbot's instead of Banana Republic (or the Limited, or some store like that)
18When you think you remember what sex was
19You remember Tom and Jerry coming out in the 40s but don't remember the Wii U coming out
20you're still tired even though you've slept 12 hours
21you get excited about tea
22When you call 20/30 somethings Kids
23You think Betty White is sexy
24your pants start to rise to your armpits
25You enjoy I Love Lucy
26You can't tell the difference between your son and your potted plant
27You personally knew Pablo Picasso
28You forget things often
29when broadness of the mind and narrowness of the waist change places
30When you stop waving goodbye but, the top of your arm carries on.
31The Candles Cost More than the cake
33You get angry more easily
34You lose your sense of smell
35you are glad you can hand the grandchildren back over to their parents