Well shit

Jim DodgeStone Junction : an Alchemical Pot-Boiler, Atlantic Monthly Press, 1990, p. 101.

Wild Bill was pointing down into the water. « See them rocks there in the shallows? Now see them black dots? Those are the stick-and-stones houses of caddis fly larvae, which is what the fish are feeding on today. »

Teeth chattering, Daniel waded to shore. He was furious, but he had to know. «  Okay, what kind of fly were you using to imitate them? »

« Well shit, » Wild Bill said, putting his arm aroud Daniel’s wet shoulders, « I took my pocketknife and sliced that goony looking batch of feathers off the hook and put on some of those real caddis fly larvae.