Murphy's Law

Murphy's Law presents itself differently in everyone's life. For me it goes something like this: the kids soil their diapers in the morning, but because this afternoon I've gone to run errands and left the diapers and wipes sitting on the counter, one child has filled his/her pants. Or the one morning we can all sleep in a little the phone rings waking everyone up quite early. Or just the opposite happens-- I need the kids to be up so we can get somewhere on time and they decide they want to sleep an hour later than usual (and I HATE waking sleeping children!) What have been some of your "run ins" with the (Murphy's) Law?