"Cup of Cofee" joke

A Santa goes into a store and sees a shining object. He asks
the clerk, "What is that shiny object?" The clerk replies, "That is a
thermos flask."
The Santa then asks, "What does it do?"
The clerk responds, "It keeps hot things hot and it keeps cold things cold."
The Santa says, "I`ll take it!"
The next day, he walks into work with his new thermos.
His Santa`s boss sees him and asks, "What is that shiny object
with you?"
He said, "It`s a thermos flask."
The boss then says, "What does it do?"
He replies, "It keeps hot things hot and cold things cold."
The boss said, "Wow, what do you have in it?"
The Santa replies, "Two cups of coffee and a coke."