run away with the notion

run away with the notion

To take a fantastical or unrealistic idea as something that is definitely true or destined to happen. His book appeared on a local bestseller list, and now he's run away with the notion of being a famous author. Local tabloids are running away with the notion of the mayor being a part of a big conspiracy.
See also: away, notion, run
Farlex Dictionary of Idioms.

run aˈway with the idea/notion

(spoken) believe something that is not true: Don’t run away with the idea that you’re going to be famous just because you’ve appeared on television once.
See also: away, idea, notion, run
Farlex Partner Idioms Dictionary
See also:
  • run away with the idea
  • run away with the idea/notion
  • be meant to be
  • be meant to be something
  • give (someone) a big head
  • be in a dream world
  • delusion
  • delusions of grandeur
  • cast beyond the moon
  • flight of imagination
References in periodicals archive
Please do not run away with the notion that I am no fan of coffee.
Coffee shop obsession not my cup of tea
Please do not run away with the notion that I am at all an enemy of summer.
A different view of life in Birmingham
O'Neill urged fans not to run away with the notion that Villa are on course for Europe even though they will be joint fifth with Chelsea if they win tonight.
Football: Confident Villa aiming to maintain progress; BARCLAYS PREMIER LEAGUE
Don't run away with the notion that local politics is a laugh because an MP and a council are engaged in a slanging match.
Make your voice heard
No one in their right mind would dare underestimate them, but don't run away with the notion that France are sort of unbeatable unofficial world champions.
Football: Reach for the stars; SCOTLAND FIT FOR PURPOSE
Do not run away with the notion that I have any time for the bootleggers, who are no doubt greedy, shadowy and thoroughly beastly.
Wasting our cash on Olly; Paul Fulford A DIFFERENT VIEW OF LIFE IN BIRMINGHAM
Martin Laursen was delighted to help set Aston Villa on their way to victory over Derby County but immediately urged his team-mates and the supporters not to run away with the notion of European football - just yet.
Football: Cautious Laursen taking one step at a time towards Europe
But don't run away with the notion that he's the new Henrik Larsson.
Archie: MART AJ A GOAL PLAN; O'Neill should turn attention to Andy
Please don't run away with the notion that I am anti-monarchy.
If Her Maj is hard up what hope for the rest of us? Paul Fulford A DIFFERENT VIEW OF LIFE IN BIRMINGHAM