Birthday Ode to My Not-Such-a-Baby Baby Sister

The news of your impending arrival made me realize that our parents were still having sex. Ew.
When you were born, I became the designated babysitter for you.
This situation blew.

There was actually a time, you were shorter than me.
Over the years, this has ceased to be.
Now, I have to look up in order to see.
This has invoked some jealousy.

You used to be a total pain.
From trying to kill you, I would have to refrain.
And you may have something to do with the fact that I'm no longer sane.

But having you in my life has been only a boon.
You are the one who calls me all day starting at noon.
Because of the laughter you invoke, everyone here thinks I'm a loon.
And I'm always hoping to hear from you soon.

As a baby I only viewed you as a pest,
As you got older, you finally gave me a rest.
And today, of my friends, you are the best.
Even though I have a bigger chest.

So Happy Birthday to my darling Spawn,
Without you, my day would have no dawn.
From a child to a woman you have undergone,
With a future of success and happiness to look on.