I don't know many jokes but I love puns. The books of the Land of Xanth by Piers Anthony has lots of puns in there, some not too clean. It has one about a plaque with felines posterior on it. and a Tree with toilet paper on it called a toiletry and a lake ogrechobee like lake Okeechobee in Florida but of course its surrounded by ogres. anyway I will retreat to the corner before I start getting rocks thrown at me for my bad puns.