What does the ostrich club joke mean?

This is a joke that five people often play, that is, for example, asking Xiu Xiu to do a funny thing, but he didn't do it well. The mouse said I would do it, and Changmin also said I would do it, and the neutral rice followed suit. Finally, Xiu Xiu said, I'll do it! Everyone said in unison, you do it. Then burst into laughter. This is a joke played by a group of funny artists in Japan. This organization is called ostrich club. Do you understand what I said?