My Front Door Is - Gilbert Osullivan

I'm doing something I don't understand
What I am doing, although I have planned
Out everything yesterday morning
I saw you walk by My front door is blue

How about you
Coming around to see me in the spring
Mattress on my bed, there's one sheet missing
Since last July, I don't know why

I let you walk right pass.
My front door is green. Have you seen
Anybody with a name
Should know how to spell

It unless he is insane
And I'm very well
Thank-you I do know how to knot my tie
Is covered completely with letters I