Notes"Tsk! Status code "418 I'm a teapot" shouldn't be removed, it's from a real actual IETF blessed RFC. Albeit in the fine tradition of April 1st RFC"FeedUnfurl
Notes"418 I'm a teapot ... Any attempt to brew coffee with a teapot should result in the error code "418 I'm a teapot". The resulting entity body MAY be short and stout. "FeedUnfurl