There are obviously degrees of intelligence and if we are to call human beings, intelligent and I hear some people laughing in the background as I say this, but if we use the human brain as our model to design artificial intelligent robots then, well we have our work cut out for us.
Indeed, I would think that a higher-end artificially intelligent robot should be able to think enough to come up with its own jokes that their human companion would indeed laugh at. This subject came up recently in an online think tank when one member, Keith, while considering this subject stated;