Haha I have left a 100 watt incandescent bulb on for the last week and a half of flower once.
I have done what you are talking about too many times....that's why I always take pics at the flip... cause I would unplug the lamps, and use a lightbulb for the pics and then plug the lamps back in and forget to turn the light back off ....
I've done this enough times, that the work light in my flower room now only gets plugged in with an extension cord running out the door. There is no way to close the door behind me without first unplugging the cord.