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A phrase uttered out of disgust, surprise, awe, etc. Most likely coming about due to the popular idea of angels having wings and therefore having feathers. I'm pretty sure if Jesus had wings they'd be more like a bat's wing rather than feathery but whatever.

First heard on the Phil Hendrie Show by Pastor William Renick.

Tommy: How much to get my brakes fixed?
Mechanic: That's gonna run you 'bout $700.
Tommy: Sweet feathery Jesus!

by Butt-nut April 27, 2007