A cacher walks into one of those mega outdoor adventure stores and is immediately curious about a shiny object on sale. The cacher asks the sales assistant, 'What is that?' The assistant responds, 'It's a thermos.'
The cacher then asks, 'What does it do?' 'It keeps hot things hot and cold things cold.' The cacher is intrigued, he quickly thinks of all the different circumstances when owning one would come in handy. So, cacher buys one.
A couple days later the cacher brings the thermos to work. The cacher’s Muggle Boss asks, 'What is the shiny object you have there, a new placement container?' 'No, it's a thermos. It keeps hot things hot and cold things cold.' The Muggle Boss then asks, 'What do you have in there?' The cacher replies, 'Two cups of coffee and a Popsicle.'
Bad dad joke, great event. Thanks for the discovery.