Are comments marked in some way to show when edited like reddit was?

Are titles?

Like could I write a post/comment “how often do you call your parents” and after everyone comments, once a week, once a day, oh god never, etc,

Edit the post/comment to say “how often do you eat poop”

And then sit back and chuckle softly to myself? Or would it say *(edited)

It should.

Edit: edit check