It's when you make jokes with your self. Usually in one's head, but sometimes
out loud and then no one understands. Also shortened to humorbate for the action, and humorbator
for the reference of one in the action.
in line, I was humorbating
to keep myself in a good mood
and pass time.
When I turned into the aisle, the employee was laughing with noone around, he's a humorbator.Sometimes
I'm so bored I humorbate.