Do you have an uncle called Bob?
No? Don't worry, you can still have an experience called 'Bob's you're uncle.'
It's used to describe something that's simple and can be achieved easily.
e.g. boiling an egg couldn't be easier - pop it into a pan of boiling water, let it boil for 3 -5 minutes, take it out and Bob's your uncle! A delicious boiled egg!
Strange but true.
Here's one of my favourite Bobs; a character from the fast moving, cynical, New York comedy called Becker.
Bob's a fast talking opportunitist. Here he's waiting in Doctor Becker's apartment when he gets involved in a case of mistaken identity.
It couldn't be easier, just watch the video and Bob's your uncle!