The variations replace the victims, the switch operator, the trolley, or any combination of those with other characters or ideas. Some of them do away with the junction altogether: The meme was ...

At its heart is what philosophers call “the trolley problem,” Mr. Fixman said. “A trolley is moving down the tracks and it can either kill one person who’s driving the trolley or five ...

His song Ambient Scotrail Beats was made by layering a track from YouTube artist Lofi Girl with the ScotRail announcements. It includes the line - "There is a supermarket trolley on the line ...