What does the word "jocose" mean?

Unreal Neil., I remember an old episode of MASH where Father Mulcahy used the word jocularity when he was tipsy.

How Jocular.. 😃.

I actually didn't know that. I just guessed

I'm not good at jocose

My slow behind thought it meant jacuzzi 😂and started making the jacuzzi joke Kanye made about it