Nothing better than hearing Mommy getting her rocks off. You need to be the adult and tell them to go to his buddy's house so you don't have to hear that shit lol
There has to be some processes that keep them semi alive/mobile. They have the natural instinct to feed and I feel the food is processed in some way or another creating energy to hunt. I just don't think a zombie can be alive and moving without it's entrails intact unless they photosynthesize lol