Things NOT to do

I just came across this list of things that make people look old so if I can just remember not to do these things I guess I'll be young forever:

1. Fumbling with payment at the register, especially counting out coins. Coins go into an overflowing jar on the bureau, and I don't want to hear any more about it.
2. Complaining about portion sizes.
3. Complaining about how prices have gone up, in a manner that implies I don't understand how inflation/money works.. . .
4. Voting against school/education taxes. . . .
5. Asking people to guess my age, and then gloating when the guesser tactfully subtracts ten years.
6. Complaining that current popular music isn't even music, or that songs/books/movies USED to be good/quality/art, but NOW are NOT. . . .
7. Explaining to frazzled, exhausted, verge-of-emotional-breakdown women with small children that this is the best time of their lives. . . .
8. Suggesting that things are getting worse and worse with every generation---starting with the one immediately following mine.
9. Complaining about how "weird" baby names are now; why don't people use NORMAL names like the names WE used for OUR babies?

I have to admit I've already done a few of these things.