Canada is the nation directly north of the United States of America. Canadians are the people living in Canada, or of Canadian descent.
Canadia vs. Canada
Ghost has been highly critical of Canadian policy and the population. In particular, Ghost dislikes their more progressive policies, such as public healthcare. When challenged, Ghost often references a story from a hockey game he attended shortly after 9/11 in which Canadian fans apparently booed the American National Anthem.
Ghost refers to Canadia as the "...pimple on the ass of America," seemingly forgetting that Canada is actually above America. Ghost often tells Canadian callers to go, "...hump a dead moose," or to, "...stop tickling your ass with a maple leaf," then a follow-up insult, somewhere along the lines of making fun of their bacon. Ghost dislikes artists that came out of Canadia, such as Celine Dion, Justin Bieber and 'one-ball' Tom Green - whose music typically makes him rage when it is spammed frequently during the show.
Because of Ghost's strong dislike for the nation, even referencing Canadia is often enough to make Ghost rage. Callers often sing the Canadian National Anthem.
Fort McMurray Situation
Because of the current wildfire that's happening in Alberta and is spreading as of now with 80,000 people displaced from their homes, Ghost even says that this is a huge tragedy even though he doesn't think well of the north, he still thinks they deserve better. Ghost is currently defending Canadia from sick and twisted Twitter names like AlbertaEnFuego and sorts.