I'll raise you one: yesterday I headed out to the local library for a change of scene and to get some work done. I was going to plan the refactoring of my web app, so I was already thinking about it on the way there. Now here's the thing, I didn't go straight to the library, I walked on autopilot to the newsagents instead. Missing your stop is one thing, actually walking to the wrong destination and not realizing until you're literally there is considerably worse!