What's a Thermos?
A blonde woman walks into a department store and spots a shiny object on sale. The blonde woman asks the sales clerk, "What is that shiny thing?" The clerk responds, "It is a thermos." The blonde woman then asks, "What does a thermos do?" "It simply keeps hot things hot and cold things cold."
The blonde woman buys the thermos. The next day the blonde woman proudly takes her new thermos to work. The blonde woman's equally blonde boss asks, "What is that shiny thing?" "It's called a thermos." "What does a thermos do?" "It simply keeps hot things hot and cold things cold." Her blonde boss then asks, "What do you have in the thermos?" The blonde woman smiles and replies, "Two cups of coffee and a scoop of chocolate ice cream."
I heard that on Coast to Coast AM hosted by Art Bell years ago.