show you where the ocean is

The act of killing someone. To then dispose of the body in the ocean

im gonna show you where the ocean is, you studio gangsta

Where the ocean's at

To do someone a massive favor or service, specifically in an area the person is unfamiliar with and liable to be screwed over trying.

A: is the music industry really that hard to be successful in?
B: Yeah, but if you ever want to give it a shot, I'll show you where the ocean's at.