tip the gaff

Penn and Teller see their style as rejecting the assumption that “the people in the audience are ignorant savages who will fall at our feet and worship us for performing supernatural miracles.” Penn may enjoy describing the “Penn & Teller” approach to magic as tipping the gaff...

Lady! She couldn't disguise herself as a lady with that Slavonic map of hers tipping the gaff, and those heavy hoofs of hers.