Eg at work today was doing some photocopying and took a lot longer than expected, maybe over half an hour. I felt bad so when I went back into room handed it over to boss who asked if I'd grabbed lunch and what I'd gone for. In a panic I said I had and had grabbed a sandwich downstairs. Paranoid now that it was obvious I hadn't as I still had my laptop on me - I feel terrible for lying and worry about what people may think!!