Homepage

Accessibility links

  • Skip to content
  • Accessibility Help
BBC Account
Notifications
  • Home
  • News
  • Sport
  • Weather
  • iPlayer
  • Sounds
  • Bitesize
  • CBeebies
  • CBBC
  • Food
  • Home
  • News
  • Sport
  • Business
  • Technology
  • Health
  • Culture
  • Arts
  • Travel
  • Earth
  • Audio
  • Video
  • Live
More menu
Search iPlayer
  • Home
  • News
  • Sport
  • Weather
  • iPlayer
  • Sounds
  • Bitesize
  • CBeebies
  • CBBC
  • Food
  • Home
  • News
  • Sport
  • Business
  • Technology
  • Health
  • Culture
  • Arts
  • Travel
  • Earth
  • Audio
  • Video
  • Live
Close menu

iPlayer Navigation

iPlayer Accessibility Help
  • Christmas
  • ;;

    Channels Sub Navigation

    • BBC One
    • BBC Two
    • BBC Three
    • BBC Four
    • BBC Radio 1
    • CBBC
    • CBeebies
    • BBC Scotland
    • BBC News
    • BBC Parliament
    • BBC Alba
    • S4C
  • Categories

    Category Sub Navigation

    • The Traitors
    • Strictly Come Dancing
    • Drama & Soaps
    • Films
    • Comedy
    • Documentaries
    • Sport
    • News
    • Entertainment
    • Music
    • Food
    • Lifestyle
    • History
    • Science & Nature
    • Arts
    • From the Archive
    • Audio Described
    • Signed
    • Northern Ireland
    • Scotland
    • Wales
    • CBeebies
    • CBBC

    Promoted categories

    • The Traitors
    • Strictly Come Dancing
    • Drama & Soaps
    • Films
    • Comedy
    • Documentaries
    • Sport
    • News
    • Entertainment
    • Music
    • Food
    • Lifestyle
    • History
    • Science & Nature
    • Arts
    • From the Archive

    Accessible alternative formats

    • Audio Described
    • Signed

    Regions

    • Northern Ireland
    • Scotland
    • Wales

    Children’s

    • CBeebies
    • CBBC
  • A-Z
  • TV Guide
  • Watchlist
  • Home
  • Hey You What If?
CBBC

Hey You What If?

Impossible questions need epic answers! From What if the moon was made of cheese to What if all you touched turned to gold? See the world get turned upside down as we find out!

Series 1: 1. You Fell into a Black Hole? (5 mins)

Start watching

Series Navigation

  • Series 1
  • Series 2
  • More Like This
  • Odd Squad
    The Odd Squad, led by Olive and Otto, investigate strange events.
  • Shark Bites
    Steve Backshall travels around the world to learn about sharks
  • Duck and Frog
    Duck's dreams of keeping a job for longer than a day are ruined by overbearing Frog
  • Out of This World
    Dr Maggie reveals how space exploration has changed our lives on Earth.
  • Go Get Arty
    The Kwapong family take on art challenges featuring celebrities and legendary artists
  • Newsround
    Topical news magazine for children.
    8 mins
  • Super Happy Magic Forest
    Quests, picnics and frolics
  • SpongeBob SquarePants
    Yellow sea sponge SpongeBob lives deep in the ocean in a town called Bikini Bottom
    12 mins
  • Horrible Science
    Science is about to get very horrible indeed!
    1:32
  • Boy Girl Dog Cat Mouse Cheese
    The hilariously bonkers adventures of a boy, a girl, a dog, a cat and...a piece of cheese
  • Grizzy and the Lemmings
    Grizzy and the Lemmings spark disasters they do not always master!
  • Operation Ouch!
    Dr Chris and Dr Xand explore their way through the world of medicine and biology.
::
  • Parental Controls
  • Help & FAQ

Explore the BBC

  • Home
  • News
  • Sport
  • Weather
  • iPlayer
  • Sounds
  • Bitesize
  • CBeebies
  • CBBC
  • Food
  • Home
  • News
  • Sport
  • Business
  • Technology
  • Health
  • Culture
  • Arts
  • Travel
  • Earth
  • Audio
  • Video
  • Live
  • Terms of Use
  • About the BBC
  • Privacy Policy
  • Privacy Policy
  • Cookies
  • Cookies
  • Accessibility Help
  • Parental Guidance
  • Contact the BBC
  • Make an editorial complaint
  • Careers
  • BBC emails for you
  • Advertise with us
Copyright © 2026 BBC. The BBC is not responsible for the content of external sites. Read about our approach to external linking.