Old trope about ghosts being a long white bedsheet

Seems easy to speculate about the “going ‘Whoooooooooooo’” part. Owls hooting in the night.

Do you really want to see your grandpa naked?

…and probably in some unflattering stage of decomposition?

(I just wanted to point out that user #1972 posted a link to thread #7291. I’m amused by that, for some reason.)

the Beetlejuice scene.

Yup. Shakespeare, Hamlet (circa 1600), Act I, Scene 1:

(Emphasis added.)