Title: Bob's your uncle
Content:  The origins are uncertain, but a common theory is that the expression arose after Conservative Prime Minister Robert Gascoyne-Cecil, 3rd Marquess of Salisbury ("Bob") appointed his nephew Arthur Balfour as Chief Secretary for Ireland in 1887, an act of nepotism, which was apparently both surprising and unpopular. Whatever other qualifications Balfour might have had, "Bob's your uncle" was seen as the conclusive one. The main weakness in this theory is that the first documented usage of "Bob’s Your Uncle" is in the title of a revue at the Victoria Theatre, Dundee, in June 1924. If Salisbury’s notorious nepotism toward Balfour in the 1880s had been so widely spoken of to inspire a popular phrase, it is perhaps unlikely that it would have taken nearly forty years for it to appear in print for the first time.
Title: Say Uncle
Content:  There are several theories on the phrase's origin. One theory is that it derives from a phrase uttered by youngsters in the Roman empire who got into trouble, patrue mi patruissime (“uncle, my best of uncles”). It may also be based on a joke from 19th-century England about a bullied parrot being coaxed to address his owner's uncle. "Uncle" may derive from the Irish anacol, meaning mercy or quarter, but there is no strong evidence to support this conjecture. Another suggested origin is from the English phrase “time out”, a plea to cease hostilities. The abbreviated usage "T.O." was mistaken for the Spanish “tío”, which means "uncle".
Title: Bob's your uncle
Content:  "Bob's your uncle" is a phrase commonly used in the United Kingdom and Commonwealth countries that means "and there it is" or "and there you have it" or "It's done". Typically, someone says it to conclude a set of simple instructions or when a result is reached. The meaning is similar to that of the French expression "et voilà!" or the American "easy as pie" or "piece of cake".
Title: Bob's Your Uncle (YouTuber)
Content:  countries to teach viewers how to make local dishes such as schweinshaxe from Germany, tandoori chicken from India, and börek from Turkey. Uncle Bob converses with Hong Kong slang and Cantonese profanity, which he uses during everyday speech. To make a cooking video, it usually takes him one night for filming, one night for editing, and two to three days to add English and Chinese subtitles. He has no trouble with coming up with English subtitles but finds Chinese subtitles to be cumbersome owing to his slow Chinese input method. U Lifestyle said Uncle Bob was "very popular on the Internet" because his "shooting method is unique". According to a 2020 article, Uncle Bob had not published any cooking videos recently. In 2021, Bob's Your Uncle had over 600,000subscribers. He has subscribers from Malaysia, Taiwan, the United Kingdom, and the United States.
Title: Bob's Your Uncle (YouTuber)
Content:  Bob's Your Uncle (born 18 June 1981), known as Uncle Bob, is a Hong Kong YouTuber who makes videos about cooking and travelling. As a teenage student, he travelled to the United Kingdom for schooling. Uncle Bob started to learn to cook after he found the Chinese restaurants he visited to be unappetising. Uncle Bob started a YouTube channel in 2014 at the suggestion of his wife, who worked in advertising. He makes cooking videos about dishes from numerous countries. Uncle Bob uses Cantonese slang and Cantonese profanity in his videos. In addition to sharing about his personal life experiences, he discusses current events and political issues. Bob's Your Uncle was included in the "yellow YouTube circle" list in which netizens promoted channels that supported the 2019–20 Hong Kong protests. His travel videos include reviews of cruise ships and first-class flights. After moving to the United Kingdom, he made a video sharing his experience of finding a rental in London.
Title: Bob's Your Uncle (musical)
Content:  Bob's Your Uncle is a 1948 British musical comedy with music by Noel Gay, lyrics by Frank Eyton, and a book by Austin Melford. After premiering at the Royal Court Theatre in Liverpool, its West End run at the Saville Theatre lasted for 363 performances, between 5 May 1948 and 19 March 1949. The work was designed as a vehicle for the comedian Leslie Henson, who also co-produced it. The cast included Vera Pearce.
Title: Bob's Your Uncle (YouTuber)
Content:  Uncle Bob was born on 18 June 1981. He began cooking when he was 15 or 16 years old after having moved by himself to the United Kingdom as an international student. Uncle Bob had little money at the time. When he ate at Chinese restaurants, he found the food to be unappetising: the fried rice was too dry and the meat was tasteless. He lamented that the food sometimes was not even sufficiently warm. His first dish was luncheon meat and fried egg and was made for his then-girlfriend. He did not know how to cook at the time and added ginger to the dish. 
Title: Bob's Your Uncle (YouTuber)
Content:  Uncle Bob did a collaboration video titled "Strike It Rich" with another Hong Kong YouTuber, Mama Cheung, after he liked the fried oyster omelettes she had made. In 2019, Uncle Bob made a video criticising two key opinion leaders who had said there was no point to going to school. He argued that there were numerous benefits to school. When mainland Chinese viewers suggested that he post his videos on Youku for the convenience of mainland Chinese viewers, Uncle Bob stated that the mainland Chinese government did not tolerate dissenting opinions. He joked that when he talked about Leung Kwok-hung, a member of the Legislative Council of Hong Kong, filibustering, mainland Chinese websites would 
Title: Bob's your uncle
Content: The long version Bob's your uncle and Fanny's your aunt meaning "and there you are" or "it's that easy!" or "(after that) it's done!" or "(after that,) you have achieved what you wanted to achieve". One variant is Bob's your uncle and Fanny's your granny. Other variants, of both versions, spell your as yer. ; This longer version may have been shortened to Bob's your uncle as Fanny has taken on a sexual meaning (late 20th century) since the expression was coined (1887). Piece of cake, an informal expression for something very easy. ; It's a doddle, another slang expression for something very easy or it's a cinch. ; Easy peasy, a childish expression for something very 
Title: Bob's Your Uncle (YouTuber)
Content:  and his wife have worked in advertising. Uncle Bob is a strong association football fan who has travelled to numerous international stadiums to watch his favourite team. Uncle Bob, who had studied and lived in the United Kingdom for numerous years, moved to the United Kingdom. He made a video about his experiences renting a place in London. Netizens suggested that he review the Clapham Place, a new development. Uncle Bob published a video criticising the building for being overpriced, having terrible amenities, and being next to a busy street. A lawyer for developer Regal London sent him a letter demanding he remove the video.

Question: where does saying bob's your uncle come from?
Answer: unknown origin.