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Watch this web exclusive clip of Dennis and Walter racing on their lilos for the chance of gold medal glory.
60 Second Dennis - Time Machine
Dennis the Menace and Gnasher
5 Things You Didn't Know About Richard Wiske...
60 Second Dennis – Machine Menace Mayhem
We’ll hide these CBeebies shows for 30 Days.
Bring them back!
Why did you hide them?