dumb luck


Also found in: Wikipedia.

dumb luck

Complete or total chance. It was dumb luck that I bumped into them on the street. Normally, I turn right when I leave my house, but that day I happened to turn left! I swear, I didn't do anything to facilitate this—it was just dumb luck.
See also: dumb, luck
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.