Only when we've had a few drinks the night before.
After my birthday last year I cycled in to work, felt fine getting changed but as soon as I sat at my desk, fired up my PC and looked at the screen I felt absolutely awful. THE worse hangover hit me and I could no longer hold my head up without feeling like I was gonna hurl. So I closed my eyes. Two hours later I woke up, nobody seemingly bothered, went to the loo, threw up, got changed then cycled home to sleep it off. All after a Tuesday quiz night! cushy place to work tbh!