The joke here is that he has no idea who this girl is and yet he still signed her key. This is dangerous, because he is vouching for her identity. If he is mistaken, this could result in a serious loss of credibility on his part.
https://www.explainxkcd.com/wiki/index.php/364:_Responsible_Behavior
ExplainXKCD…because I’m not smart.
Despite all the hate, I do have one of these. I used to have a box next to my furnace with a male end, wired up to the switch so that if the power went out for a longer duration in the winter, I could plug the furnace into the generator with an extension cord and heat the house. When the furnace was replaced, I was too lazy to wire up another. A friend who’s dad is a master electrician told us that in an emergency, you could flip all the breakers in the box to off including that mains, use a male to male cable to plug the generator into a wall outlet and flip on the furnace breaker and the breaker where the generator is plugged in and power the furnace that way (so long as both circuits were amp rated the same).
Of course, it came with a disclaimer that he’d deny telling us this to the insurance company and a warning that “bad things would happen” if we somehow enabled the mains to the power company.
It’s working as designed. The sac is the mud flap, right?