Back in the days when it was possible to have a half of shandy within seven days of duty, I once left the aircraft without signing the tech-log. Getting back to my room after dinner, and a couple of beers at the hotel, there was a message from ops that the engineers would ground the plane in the morning if the log wasn't signed. The only practicable thing to do was to change into uniform, wear ID and go to the office. I wasn't drunk, but would have blown over the limit if breathalysed. Although I wasn't due to report for flying until the following afternoon, I suppose if someone had been looking to cause trouble, signing the tech-log could be construed as an "aviation function". There but for the grace (and a different social outlook) .. etc