Reportedly, Thomas the Tank Engine can make children scared of going on trains.
When I was a kid, I was scared of going up hills, especially to fetch a pail of water, knowing, as I did, that Jack fell down and broke his crown, and Jill came tumbling after.
I was also scared of pretending to be a dog whilst laughing at cows jumping over the moon, because I was convinced it would cause the dish to run away with the spoon. And that would have been intolerable.
Oh, alright, I see it now. Alll the crashes in Thomas the Tank Engine are bound to make children fearful of getting on trains.