When you are sitting at a table eating with some boring friends, you pull your balls out of the side of your shorts, put your wrist on your thigh, put your balls on top of your wrist, and say to your friends "hey, have you seen my new wristwatch?" Your friends then look and see your balls on your wrist.
In a world of so much bad and complete sentences, having a nice is an open ended term and philosophical way of living life of looking at the simple things and being grateful for existence as it is.
Have you seen Chef is a Filthy Frank reference to the movie Chef created by Jon Favreau. The movie was introduced as a joke in an episode of the Filthy Frank Show called Vomit Cake. It's a pretty good movie.