"Mystery Song" joke

Mystery
All my life has been a mystery
You and I were never ever meant to be
Thats why I call my love for you... a mystery.
Different country
You and I have always lived in different countries
And I know that airline tickets don't grow on a tree
So what kept us apart is plain for me to see
That part at least, is not really much of a mystery.
Estuary
I live on a houseboat on an estuary
Which is handy for my work with the port authority
But I'm sure you would have found it
Insanit-ery
Insanit-ery
Headed me
I am foolish to ignore the possibilty
That if we actually met, you might have a taken a really violent dislike of me
But thats not the only problem I can see
Dead since 1993
You've been dead now, wait a minute, let me see,
14 years come next Janu-a-ry
As a human beign you are history
So why do I still long for you
Why is my love so strong for you
Why did I write this song for you
Well, I guess it's just a mystery
Mystery