Abney and Teal are worried because the Poc-Pocs are not poc-ing; they are not even interested in porridge or games. Teal decides that what the Poc-Pocs need is a holiday to cheer them up.
A religion is a belief system with rituals. The missionary kopimistsamfundet is a religious group centered in Sweden who believe that copying and the sharing of information is the best and most beautiful that is. To have your information copied is a token of appreciation, that someone think you have done something good.