- LJ forgot to remind me.
- My brain forgot to remind me.
- I didn't know in the first place.
- You have a restraining order against me.
- I am terribly self-centered.
- Someone else had the same birthday as you, and they hogged the whole day.
- I was drunk.
On the other hand, there is no reason why I have had this gift for calamityjon sitting on my kitchen counter for like two weeks other than pure laziness and the strong likelihood that he will hate it. So, my bad. At any rate, happy birthday to you, whoever and wherever you may be.
I think it's funny when people say "congratulations" to people on their birthday, like they've accomplished something. Like "Hey, good job on not dying in utero! You lived! Way to go!" In fact, I really enjoy it when people take credit for things that they had relatively little to do with. I'm undecided as to whether childbirth fits this category (certainly it strikes me as pretty absurd for the father to accept congratulations for having successfully ejaculated), but it definitely applies when you say something like "I'm proud to be an American" or "I'm proud to be black" or the like, as if you had any say in the matter.