> If you slow down the audio/video to about 25% speed, you'll notice that the sound for 'needle' begins a fraction earlier than 'storm'. This is because the 's'-sound (in storm) actually begins in the 'ee'-gap of 'needle'. The 't'-sound of 'storm' atches with the 'dl'-sound of 'needle'. The whooshing sound during the 'ee'-gap of the 'needle' sound is heard by our brains as an 's'-sound and - since the brain is already primed for 'storm' - we hear the rest accordingly.
Deep in the comments, someone posted this:
> If you slow down the audio/video to about 25% speed, you'll notice that the sound for 'needle' begins a fraction earlier than 'storm'. This is because the 's'-sound (in storm) actually begins in the 'ee'-gap of 'needle'. The 't'-sound of 'storm' atches with the 'dl'-sound of 'needle'. The whooshing sound during the 'ee'-gap of the 'needle' sound is heard by our brains as an 's'-sound and - since the brain is already primed for 'storm' - we hear the rest accordingly.
The toy is supposed to be saying Brainstorm: https://ben10.fandom.com/wiki/Brainstorm