Space Pen
There’s been a fascination with space for decades. Many inventions have come from space-age technology, including the famous space pen. But calling out someone for creating a pen that works in space seems to be a little nonsensical.
That’s OK because this guy schooled the original poster by giving them a little breakdown of why that pen was created. The sad thing is, this guy could have probably learned about this by just looking at Wikipedia, and then he wouldn’t have looked like such an ignorant jerk.