Rick Grimes is the lead character of The Walking Dead, the television drama based on the comic series of the same name, and Carl Grimes is his son. Rick's urgent calls for Carl became one of the show's most recognisable vocal moments, and short clips of the shout spread through fan edits, reaction videos and meme pages. The name is also joked about because many viewers hear it as Coral, which helped the clip travel beyond fans of the show. It remains useful because a shouted name instantly signals danger, worry and a parent trying to stop something bad happening.