Erlkönig: sex+stamp-collecting.shtml

    A middle-aged man and woman meet, fall in love, and decide to get
married.  Settling into the bridal suite at their hotel on their wedding
night, the bride turns to her groom: "Please promise to be gentle...  I
am still a virgin."  The startled groom replied, "How can that be? You've
been married three times!"
    The bride responds... "Well, you see, it was this way: My first
husband was a psychiatrist and all he ever wanted to do was talk about
it.  My second husband was an astronomer and all he ever wanted to do was
look at it."  Catching her breath, she then added, "And my third husband
was a stamp collector and all he ever wanted to do was... Oh, God, I miss
him!"