"He's got the key of the door....."

Birthday me, but still had to work. (I should have organized things better). A normal day in every other respect.
A nice kiss and prezzie from the boss that won't help my waistline.
More packing, and now it feels real so I can be just a bit excited.
How old am I?
Well, it rhymes with one of the lines  in the song from the title.

Ah well...