Humans' capacity for stupidity never fails to amaze. Some people's utter idiocy reveals itself right away, but others have their complete and utter dumbness gradually come out over time. A recent Reddit thread had people sharing stories of the exact moment they realized they were dating an idiot, that almost always results in a facepalm.
For some it's a total turn off...
...but for others, a turn on.
He looked out the car window to check his parking job, then closed it on his own head.