Short answer - I'm schizophrenic.
I go to great lengths not to peek at the presents under the tree - and then generally succumb around about Christmas Eve. I've been known to consider one second past midnight well past time to stop waiting.

But sometimes I don't even wait till then.
Don't ask me why I can succeed in resisting temptation until one day away from when I can legitimately open them. Maybe it's some kind of twisted inner rebellion thing.
LabRat
PS - Love those icons on the poll, Wendy. Cute!