For the most part, comedians are pretty friendly with each other. They always say they badmouth each other, but most of the time, they're friends. We're the only ones that can really stand our type of humor.

This quote is saying that, although comedians often joke about each other, in reality, they are usually friends and have a lot of respect for each other. They understand each other and their sense of humour, which means that they are the only ones who can truly appreciate each other’s jokes.