Exactly how long can I stay in bed in the morning, yet still make it to work when I usually do?
Not long enough, apparently, based on my need for mainlined caffeine.
And no, it wasn't too much birthday partying (although dinner and the mojito were excellent, Grace!) - I stayed up watching Pirates of the Caribbean - Dead Man's Chest. Still didn't finish it, and went to bed an hour and a half later than usual. I'm too old for this.