When I was a kid, my brother and I could pretty much opt out of anything (family obligations, chores, etc.) if we gave the excuse that we were hitting the books. Which was pretty awesome. But then when we came home with a 98 out of 100 my dad would ask, with a completely straight face, "What happened to the other two points?" So I guess it only worked if we actually studied.
I've been out of that game for more than a decade, and in tackling the tests and projects coming up for my job, I find myself right back to my old habits; begging off things to study then trying really hard not to be distracted by trivial things like organizing my socks. Here we are, the night before the first test at 8:30 p.m. and I still have to go over the last third of the book.