I was just wondering how could I use "Hey Presto" in my English.
I knew the meaning of the phrase, but I figured how to use it properly.

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Don't worry, Jerry ;).  Lots of people will  understand it .... in the UK, at least.

'Hey presto!' is an exclamation taken from a magician's or conjurer's act.  Just before the rabbit jumps out of the hat or the lady disappears in a puff of smoke, the magician says 'Hey presto!'.

You can say it to signal a sudden and surprising appearance, disappearance or sudden dramatic change.

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I guess you could use it any way you want but no one will have any clue what you mean.

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