Actually it's described as "interdimensional travelers that go between universes" but Lucas did want to title this movie "Indiana Jones and the Saucer Men from Mars".
When I heard that I immediately had this visual in my head of a pained and embarrassed Speilberg trying to tell him how to make this movie at least marginally not shitty.
And then Lucas would go on and on about rayguns and making "pew" noises as Speilberg sighs and looks sadly at his Oscar...
I think the refrigerator bit might have been more tolerable to viewing audiences if we saw in in the trailer. That way, it wouldn't have to have been in every description of the movie.