A Canon Pairing is a pairing that either has an inarguable basis for existence in the canonical South Park universe. This includes one-sided relationships and broken relationships, which still form a basis for shipping purposes, and fanon pairings which produced a relationship later in the show's run. Though fanon pairings are popular among dedicated fanfiction writers and fan artists, canon pairings have the unique distinction of having appeal outside the fandom and spurring discussion among casual fans, and this awards them an advantage in creating and receiving fan works.