"The Yawning Jinx (incantation: geeyuvlok) is a \"schoolyard jinx\" used by Professor Shirtliffe in her Sixth Grade practical placement S.P.A.W.N."@en . . "The Yawning Jinx (incantation: geeyuvlok) is a \"schoolyard jinx\" used by Professor Shirtliffe in her Sixth Grade practical placement S.P.A.W.N."@en . "Yawning Jinx"@en .