Goddidit

From RationalWiki

Goddidit (or, put more funny-like by British comedian Robin Ince, Magic man done it) is essentially the simplest possible explanation for the universe. It is the answer to every and all religious questions taken to their extreme end. If you're wondering how speaking the universe into existence actually works, you're a heretic and should shut up and go away.

The concept of 'God did it' can be used to create unfalsifiable theories. A creationist need never doubt creation because God could have made anything.

(Not to be confused with "goddammit".)