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It's a catch phrase dating back to 1887, when, in a blatant case of favoritism, British Prime Minister Robert Cecil (a.k.a. Lord Salisbury) decided to appoint his nephew Arthur Balfour to the prestigious and sensitive post of Chief Secretary for Ireland.

So "Bob's your uncle" is another way of saying "your success is guaranteed."
You just put these parts together like this, and Bob's your uncle - you have a working model!

You want to go to the stadium? Go straight on until you reach the park, take the first left, and Bobโ€™s your uncle - you're there!
by Pro-Love Girl September 09, 2010
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Things are easy. Historyically, comes from when you are related to victorian Royalty. Specifically, Robert Cecil.
Don't like your position in life, get your things, head to the castle, and (remember) Bob's your Uncle.

by andy1234 May 08, 2007
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British word used to say "sorted". Can be used in many scenarios.
Jack: Take the car to the garage, get the engine fixed, bobs your uncle.


Jack: Go shopping at 10am, get back to play golf, then off to the pub, and a shag later. bobs your uncle
by manoguv November 30, 2007
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to "bob" someone (like your uncle), which means completely owning or sweeping them off their feet, or in explicit way attacking them with, bitch-slapping him (or clench his face inbetween) a nice pair of bobs. This term is used mostly by indian people, referring to boobs as part of the joke.

The trend has it that lines like these are replacing unexciting "your ... mother" jokes in multiplayer gaming.
This godlike plan completely bobs your uncle and everyone else

"Bob's your uncle?"
"No mate, I said that my girl bobs your uncle with ease"
by Dv115 April 16, 2019
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