Dick has to work late at the office for a holiday special. He hears a strange noise. Oodellieoop! He realizes it's coming from outside the skyscraper. He looks out the window and sees a flying saucer go by!
The next day no-one at the office believes him.
That night the same thing happens. This time he sees the flying saucer go in a window of the building. He locates the office, and finds two guys in lab coats working on a radio-controlled toy flying saucer intended for a special holiday display at one of the big stores. They are a bit upset at being found out, but once Dick agrees to keep it secret they are actually glad to have someone to show off to. They even let him fly it around their lab. One says, enthustiastically "Push that button!"
The saucer proudly proclaims "Ho! Ho! Ho! Merry oodellieoop!"
There's still a few bugs. :-)