But Valentine's day is good for laughing at people who don't know what their symbols really represent.

If you have ever seen a heart (human or animal, doesn't matter), you know darned well that a "heart-shape" isn't very heart shaped. But it does bear an amazing resemblance to a private piece of female anatomy. Care to guess what Cupid's "arrow" might have been originally?

Them durned pagans were a little direct, weren't they? :-)