I've heard an equally stupid argument along the same lines.

A man once came to a church I was attending and wanted to talk about the "science" of Christianity.

He spit out some fact about the sun using up 2 meters of it's fuel per [some period of time I don't remember]. (Meaning it was losing 2 meters from its circumference)

He went on to say "If the earth is really billions of years old, that means the SUN WOULD HAVE BEEN COLLIDING WITH THE EARTH"

Everyone believed his shit.