Being There (1979)

Simple-minded gardener Chance is forced to leave the only world he's ever known when the master of the house dies. He has literally no experience outside of that house until he's forced to exit it and has spent all of his time either gardening or watching television. After being backed-into by an automobile, the ultra-rich owner of the car decides to take him back to her home since they've already got a team of doctors there caring for her husband. "Chauncey Gardiner" soon has a reputation as wise and careful due to his agreeability and tendency to speak in what is assumed to be gardening metaphors.

I mean... yeah. I get it. If you look the part, people make a lot of assumptions. They'll also peg you as wise when you're reflecting their own ideas back at them. But it got a little icky and a lot repetitive before it was over.

C+