"The object began changing colors from a bright silver to an orange-ish red. A strange cloud of red and orange flames began surrounding the object, and before he knew it the object stretched out like a rubber band. It grew to about twice its original size, and then it was gone.
The entire incident lasted about 10 minutes, he recalled Monday morning, but he is unaware of the specific time because, "it felt like time stopped." "
He never came to the realisation that he just witnessed a time space folding drive until the caveman accidentally yanked from the past by the craft walked by and clubbed him.
/ bad sci-fi joke.