Haha I did that one time in 2006 but it was an accident. I forgot to set my clock an hour forward, so I let myself sleep in till it was time to get up for work when few minutes before it was time to get up, I realized it was after 11 and I was going to be late. My shift started at 10:30 AM on Sundays. It happened to be Sunday that day and it was April Fools day. So I rushed out of bed, slipped on my work uniform and grabbed my purse and rushed out the door because that's ho0w much of a hurry I was in. I skipped breakfast, and skipped brushing my teeth.
My boss said I was way late and I thought in my head "Only by 20 minutes." I thought she considered that way late but for me I don't. Late in the day I look at the schedule and see I was supposed to come in at 10AM. My boss had changed my hours on Sunday and I didn't even know it. I did not even look at the hour carefully because I had assumed it would be 10:30 again like it has been for the past few months. I knew after that to check my schedule every week and to look at the hours too. Never assume. I am off every Monday and Tuesday but I still look at the schedule every Friday because I know never assume what my days off are going to be because sometimes the boss changes your days off because someone else request a day off. I even look at the hours too.