There's a church that I pass on my way to work, which has a sign out front on which they like to put too-cute things. Like the time they had, "Come in for a free faith lift." Ha ha. OK, fine.
The sign currently says this:
DOUBT IS THE ANTS IN
THE PANTS OF FAITH
A bit, uh, strained, don't you think, as well as being ungrammatical?
This also calls to mind a game we played as children, which went by a polite name and an impolite one. The players had to tell each other amazing stories, and the listeners had to guess at which point the stories veered from reality.
The polite name of the game was, "I doubt it!"