Sandwich and kitchen jokes - funny?

Maria
For those women who laugh at sexist jokes, I honestly don't understand - how? Why? 
Do you/they genuinely find them to be funny? How do you just participate in your own degradation like that? 
Usually those types of jokes make my blood boil and I'm thought by men to be too serious and a party pooper. I suppose that's normal since they're men and they don't get why it's insulting. But I wanna understand why women think it's funny?