There are times when I'm funny. Incredibly, get yer diaper on, cork your bladder, blow it out your nose funny. Other times, not so much. Why?
What factors were at work here? Did situation, attitude, stress, hunger, nearness to stupidity, necessitate a gear shift in fun?
I tracked it all, at least for a few minutes. Then I got tired and got a snack.
I'm sure some soulful writer will try to juxtapose the pain of PMS with the joy of humor. After I make him laugh, I will slug him.