They'd all dress up in their robes and their bed sheets and act like a bunch of ghosts or spooks or something.
10 seconds sound clip from the Forrest Gump (1994) movie soundboard.
You can hear this line at 00:05:41 in the Blu-ray version of the movie.
Quote context
[...]
- But we're gonna straighten him right up, now, aren't we, Forrest?
- Forrest!
- They'd even put bed sheets on their horses and ride around.
- And anyway, that's how I got my name, Forrest Gump.
- Okay... Get it, get it... Wait, is it this way? Hold on. All right...
- What are you all staring at? Haven't you ever seen a little boy with braces on his legs before?
[...]