One of the things they don’t tell you before becoming a parent is that your kids will test the limits of your sanity. I’m not talking the sleepless nights, or worrying about them when they’re sick. I’m talking about the phase they all seem to enter around 3-4 years old called the Knock-Knock Joke Phase. “Prepare thyself for constant hilary, ma & pa!” is something that you’ll never, ever hear. In fact, I did some research and discovered that the words “knock knock” actually come from Latin and refer to a rather unfortunate form of ritual suicide. Your dinner table will be beset with knock knock jokes that, worst of all, don’t even make sense. Not one usable pun will be uttered from the back seat of your minivan following the words “who’s there?” With my youngest, I spent an entire year asking “Who’s there?” only to be answered with “baby butt”, which isn’t as funny as a 3 year-old thinks it is. Well, it’s kind of funny, but not the 4,378th time you’ve heard it.