There's a nifty little site going around that tells you all sorts of horrifying statistics regarding your age.
Jimi Hendrix's death, for example, is closer to my birth date than today, and there have theoretically been a total of 231 candles on my birthday cakes. Also it turns out that Engelbert Humperdinck is exactly three times older than my brother. Of course, that's nothing compared to my mother, who is so old that someone twice her age could have seen the British rent Hong Kong from China. Such is the inexorable march of time.
So what weird statistic makes you feel old?