I call that the GHOST train.
Money Heist Season 3, Episode 3
When your favorite GHOST tells
you to do something, you do it.
The Big Bang Theory Season 12, Episode 5
Is that a GHOST?
The Big Bang Theory Season 12, Episode 16
Maybe she saw a GHOST.
Game of Thrones Season 6, Episode 1
Ghost, away. Shoo. Shoo!
Game of Thrones Season 2, Episode 2