B.O.T. is in Rocky Grassy World, where Stompy Chomper runs about eating rocks. They fall down a hole, and Stompy Chomper starts eating crystals from the wall of the cave. It eats B.O.T. too before Stompy Chomper burps and B.O.T. is free.
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.