From Longman Dictionary of Contemporary Englishteach/show somebody a trick or twoteach/show somebody a trick or twoinformalINTELLIGENT used to say that someone knows more than someone else or can do something better than them Experienced teachers can show new teachers a trick or two. → trick
Examples from the Corpus
teach/show somebody a trick or two• Experienced teachers can teach new teachers a trick or two. 