Learning is hard enough when you can't stay focused because you were out partying the night before. But it's even worse when the professor can't stay focused on the topic he's supposed to teach! A hangover will be better in a couple of days, but unless some student has a great insight to this prof's marital problems, and soon, the whole semester could be a bust. This comic is from Zach Weinersmith at Saturday Morning Breakfast Cereal.