teach/show somebody a trick or two
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. → trickExamples from the Corpusteach/show somebody a trick or two• Experienced teachers can teach new teachers a trick or two.