Imagine a person who's IQ is a dozen or so points to the left of the curve, those folks like a lot of really really dumb repetitive stuff. I worked with one of these folks in an overnight shift, he had seniority having worked there for many years. He listened to the same comedy show every single shift and laughed at the same jokes at the same spots every single time. I attempted to put on some other comedy thing once, he got pretty angry and demanded that we put on "his" show. Thankfully I was only on with him twice a week, but still I felt like I was going insane.