I've got one! We were heading to visit family this week for Thanksgiving. My husband and I have four children under 6, including a newborn. So on our last day to pack, I'm rushing around the house, trying to clean, pack, etc., between nursing the new baby, making food for the older kids, walking around the house wearing the baby carrier to get the baby to fall asleep, etc. For a few hours of this, my husband was on the computer. I asked at one point what he was doing, and he assured me that he was doing work, stuff he needed to get done before we left. I left it at that for a while, but as we got near the end of the evening and we needed to go to bed early (we were leaving in the middle of the night) and he was still on the computer, I asked him what work he was doing and whether it absolutely had to be done before we left.
His answer? The taxes. You know, the taxes that are due in April, but that he filed an extension on and has been procrastinating on for the 7 months since. The need to do them apparently became super urgent on the day we needed to pack to leave for a 2-week trip. <sigh>