One day, I was chatting with my friend in English. We were talking about something and we both knew that we were joking. The conversation is as follows:
My Friend: I am going to watch all episodes of the Community!
Me: Wuuuuuuuut? There are five seasons in total, are you sure about this?
My Friend: Right I was just joking (Blackmoon face)
Me: I Know. I'm cooperating. Ha...
By the word cooperating, I wanted to tell her I knew that she was joking all the time, but I acted like I did not know she was joking and replied to her. I wonder if you guys could understand how I use the word "cooperating" and if I used it right. Thank you!