I've devised a test so that one can know what generation they belong to. It's a fairly unhelpful test, as one can generally tell which generation he or she belongs to by, say, checking his or her birth certificate. It also only distinguishes between two generations: mine and my parents'.
And here it is!
Finish the lyric:
"I wonder, wonder who, who-oo-ooh, who..."
If you answered "who wrote the book of love?" you are in my parents' generation.
If you answered "what's in a wonder ball?" you are in mine.
This test really works better vocally.