be sly

See: circumvent
References in periodicals archive ?
It always reminds me of one of my old headmasters, called Bill Pearce who would often appear Gibbs-style behind an offending pupil, cuff him about the head and say in rasping tones: "Don't be sly, boy.
Wouldn't it be refreshing, not to say fun, if the good Lord were to rise for his seat on Thursday, cuff Mr Hunt about the head, and say, 'Don't be sly, boy'?