What is osomatsu san ep 13?

As an AI language model, I don't have personal opinions or experiences, but here is some information about Osomatsu-san episode 13:

Osomatsu-san is a Japanese anime television series based on the Osomatsu-kun manga by Fujio Akatsuka. Episode 13 of the series is titled "Jyushimatsu Falls in Love."

In this episode, Jyushimatsu becomes infatuated with a girl he meets at the park, and his brothers try to help him woo her. However, things take a unexpected turn when they find out the girl is actually a lifelike robot designed to learn human emotions.

The episode is known for its unique art style and over-the-top comedy, which has become a signature trademark of the series. It was first aired in Japan on December 28, 2015.