Dream of mother, father

I was in a zombie apocalypse. I lived on an island. I lived in a couple different small remote houses and we would let the zombie parades go by our house. We would wait for every zombie on the island to go by our house for the day. It was like a scheduled event. My brother and his wife (who is pregnant in real life) were gorilla wranglers. One day, I drove from one end of the island to the other to see my parents. While I was staying at their house (the house I live in real life at 22 years old), a couple zombies started banging on the front door. We ran inside while my father went to dispose of them. I realized there were 2 more at the back door. My mother went out back to handle them. She stabbed the first one in the brain and proceeded to do the same with the second. Only it just dropped the second one for a minute. The second zombie appeared to be just slightly fazed by it. Watching from the inside, I saw a third zombie attack my mother from behind while she was wondering how this second zombie could still be "alive." I ran outside to help but it was too late and the third zombie was eating my mother's brains. I killed it. The second zombie was still alive so I tried stabbing it in the head but when I did, it's skull was filled water and was translucent. She just looked up at me and laughed. I felt cheated and that it was not worth caring about because it's impossible to kill this zombie.