Going to other people's houses can be scary.And I'm not just talking about when you're little and not used to spending time away from home. In fact, playdates and sleepovers are some of the best parts about being a kid, right? It's only when you come face to face with someone else's rules, norms, and interior design tastes that the nightmares really begin.The home is a very private place, and in many cultures, it's not at all typical to invite strangers or even friends to your house. Is your family more shy and reserved, or are you the ones always throwing family parties and hosting barbecues? Do you have an open door policy, or will you not let anyone in?Take a second to think about all the strangers you let into your home from time to time. Painters, movers, plumbers, realtors, babysitters, family, friends, salespeople—the list goes on. How many of them do you trust? Or should they be the ones worried about trusting you?Many people's professions require them to go into the homes of strangers, and you can only imagine the types of things they've seen. Redditors who go into people's houses for a living—from pizza boys to physical therapists—were asked to share the strangest things they've ever seen, and these stories will make you scared the next time your neighbor invites you over.