When I was in my early 20's I once came home during a thunderstorm and walked into my house to discover no electricity. I then proceeded to do what I did every single day, which is walk into my bedroom and plug in my phone.
Only it didn't beep like it usually did to indicate it was charging. so I pulled the cord out of my phone and reinserted it. I did this multiple times. I even remember thinking to myself "you know, if the electricity wasn't out I could turn on the lights to see if I'm just not inserting it correctly". Then I reinserted it again.
And then the figurative light went on. I just sat the phone down, walked away, and laughed my ass off.
I was a recent grad with a double major in CS & Math, so by no means stupid. But I'm still a dumbass. We're all dumbasses.