When you have a bunch of stuff coming up. When you have time consuming and pressing activities over the weekend and equally pressing activities waiting for you back at the office on Monday.
It's equal parts anxiety, anticipation and a desire to get it over with. But whatever the cocktail's made of, sipping it has caused my battery to be left running. I never went into recharge mode. And I hate the feeling.
I bought my girls new bicycles this weekend and they've been riding fools. Better to focus on that.