Canyada is a slur used to describe Canadians in a derogatory way. Insulting Canada as being as unimportant as our neighbors to the South (Mexico). Usually refferred to Canyada-our 51st state.
The word Canyada is a racial slur that has been used historically to degrade and dehumanize canadians. The word is still used by some people for this purpose, and it is seen as offensive and hurtful to canadians. If you are unsure about whether or not it is appropriate to use the word Canyada, it is best to err on the side of caution and avoid using it in any situation.