Here's some context so you know what inspired this:

A while ago me and my mum were playing Luigi's Mansion 3 and we were on the lever with the pool and stuff. We'd finished the level and gone back to catch the boo in it. I went to get it after it went into the pool and it came out of the wall so I yelled "IT'S IN THE WALLS-".

That's all! Bye! :D