One of the most popular episodes of It’s Always Sunny In Philadelphia , Reynolds vs Reynolds from Season 8 Episode 10, has been taken on by actual lawyers. Since it is outside Charlie’s specialty of chaotic bird laws, it only seems right real lawyers take up the case.
Also, this is the episode that helped create the famous meme, You Dumb B*. Often used as a bottom image or cross over meme. See the blank meme below: