reminiscing about how things were better "Back in my day..."
Haha, I always liked that one. I know a better version of it however. There was this popular magazine in Sweden about a mother and her two teenagers. Her grandpa once says "Back in my days things were better... (silence) Because then we could fantasize about a better future."
Regarding the age of 30 as a breaking point of becoming old is rather demeaning towards people older than let's say 50 considering the average life expectancy is around the age of 68 (according to wikipedia 2010), it has always bothered me in a very minor way that is. Of course I've no personal experience being 30 rendering my knowledge of the matter rather moot (still 23). :P
And happy birthday! (not in the giveaway, just wanted to comment)