The Unexpected Is Funny

There are lots of theories of humor. I personally feel no single one tells the story of all humor but there's, for example, benign violation which posits that humor tends to arise from situations where there's some violation of the norm in the banana case. A lot of jokes are about laughing at someone with less than you and feeling better than them by laughing at them. You can often analyze humor productively by thinking about who the target is. Not everyone laughs through the pain of different circumstances in life, but some people do.