Not much gets past that sly old fox.

That he is an irrepressible jackass who thinks of himself as a sly fox?

Mr. Sahl may not be the lean, sly fox of a man he once was.

Take for example the image of the sly fox'.

"That's no answer, old boy," the sly fox bellowed at him.

Cedric, and that sly fox Harold with his smug face.

"Oh, you are a sly old fox, Belgarath," he said admiringly.

This sly fox missed nothing around him.

The sly old fox was not dead yet, and he'd sure put it over on Franco.