When the family and friends are seated at table, Kenny sits between Kyle and Great-Grandma. But when Kyle holds Great-Grandma's catheter bag, Kenny is no longer between them. He's back between them when the camera shows the whole table again.
When Uncle Howard is first introduced via TV, the TV screen is clean. When he retorts that he doesn't look good, the smear of chocolate Elvin's fudgesicle is to leave on the TV is already there. Soon after, Elvin throws his fudgesicle at a clean screen, and the smear reappears.
When Manson walks past the bookshelf in the cell "Observations from the Forest" is much smaller than "Are You There God? It's Me. Manson," but when he goes to bed, "Observations from the Forest" is bigger than "Are You There God? It's Me. Manson."
Manson's smiley face tattoo briefly changes into an alien head while in the car. Given the show's creators' propensity for hiding aliens in the backgrounds of various scenes, this is almost certainly an intentional joke.
A book written by Charlie Manson is attributed to "Charles W. Manson". Manson's middle name was Milles. However, according to prosecutor Vincent Bugliosi's book "Helter Skelter", Manson unofficially changed his middle name to Willes, so if said slowly his name would sound like "Charles' Will is Man's Son".