"Chirpy Burpy Cheap Sheep" is the second episode of the third series of Channel 4 sitcom Father Ted.
Ted bets the entire heating allowance budget for the year on the King of the Sheep competition on Chris, a sheep who has won several times and is considered a sure thing. Unfortunately, Chris has heard rumours about a sheep-eating beast and isn't feeling at all himself. Chris's owner, Fargo Boyle, begs Ted to help return Chris to his old self. After a week, Ted has successfully returned Chris's spirit. However, Ted finds out that Fargo Boyle arranged for Chris to be frightened by the beast in order to increase the meagre odds being offered for his victory. On the day of the competition, Ted makes a dramatic scene and exposes the whole plot. The two priests leave and Ted is left kicking himself when Dougal points out that, by getting Chris disqualified, Ted has lost the bet and therefore the heating allowance money. In the end, the residents of the parochial house prepare to hibernate for the winter.
- The title is a parody of the 1970s song Chirpy Chirpy Cheep Cheep by Middle of the Road.
- There is a hidden pun in the show's plot — it's all about sheep worrying.
- This is the only episode where the word "fuck" is used uncensored (as opposed to the Irish word "feck" which is regularly used as an alternative). During the scene where Ted makes his accusations, the phrase "fuckin' hell" can clearly be heard uncensored among the shocked mumbling of the crowd. The word was also used by Ted in "A Song for Europe", but was bleeped out.
- Dougal's list of "things that don't exist" includes the Loch Ness Monster, Frankenstein, Magnum, P.I., Non-Catholic Gods, Darth Vader, The Phantom and, of course, The Beast.
- In the script, Dougal was meant to say that "instead of a mouth, it's got two faces" while describing the Beast to Ted. Ardal O'Hanlon didn't think the line was funny, and so when the episode came to be recorded, he changed it on the spur of the moment to "instead of a mouth it's got four arses." The new version proved so effective that recording had to stop for a minute until the audience's laughter had subsided.
- In the episode, Ted and Dougal are scared by the howling of 'terrible monster type A' on the BBC sound effects volume 5 and Dougal quickly dives into Ted's bed beside him. Yet, in the scene after, we see Fargo Boyle having just bought the BBC sound effects volume 5, which happens after Ted and Dougal hear the sounds of the album.