Get to the Bottom of Something

Get to the bottom of something is a more common idiom. It means to discover the real reason, right? Investigators are trying to get to thebottom of what went wrong. My kids are getting weight because they can't go out these days. So we'll send them outside. They can go outside. Play outdoors. Get out there. All the Japanese kids are running around outside now. Oh, get to the bottom! What was it? Jump to the bottom. That's right.