Suey -- I came across one who was a Farm Labourer - living with his parents and he was in his 40s - then the parents died - other relatives took him in. He remained working as a farm Labourer though, still described as Imbecile. (This was in my neighbour's family tree - hence I was following the parents through, but became interested in this son.)
Louisa --- that is SO funny, I do hope some descendant did find that census. Such things bring a bit of 'colour' to a family tree and give you something to laugh about.