Years ago, my aunt had a roach crawl into her ear when she was in the shower. It was hiding in the shower curtain or something, and when the water came on, it didn't want to get wet, so it went looking for cover.
Yes, it truly was as horrifying as it sounds. Of course she freaked, and immediately squished it. One of its legs got caught on her ear drum; she actually had to go to the emergency room to get a doctor to remove it. She was in pain and freaked out the whole time.
So, yeah, those 6 legged mother fuckers deserve every kind of death you can inflict on them.