Matching Pairs AllusionsOnline version Allusions by Cynthia Cox 1 Achilles Heel 2 Sound and Fury 3 Crossing the Rubicon 4 Ivory Tower 5 All That Glitters is not Gold 6 Crocodile Tears 7 Gordian Knot 8 Sacred Cow 9 Pound of Flesh 10 Once in a Blue Moon 11 Read the Riot Act 12 Pearls Before Swine 13 Mrs. Grundy 14 Thirty Pieces of Silver 15 Sirens 16 Betrayed with a Kiss An attitude of narrow-minded prudishness Something that happens rarely To issue a stern warning that if unacceptable behavior does not cease, severe consequences will follow. Anything that tempts someone away from safety and towards a dangerous path To take an irreversible step, often involving some danger Any extremely complex problem to offer something precious to someone who are unable to appreciate the value of what is given a supposed friend's treachery something which appears valuable on the outside may in fact be less than valuable; appearances can be deceptive refers to a great, tumultuous, and passionate uproar that is actually unimportant or meaningless A person who is secluded or protected from the real world and thus out of touch with reality payment received for an act of treachery Something that cannot be interfered with or harmed in any way To show false sympathy Describes someone's insistence on being paid, even if repayment will destroy the debtor A vulnerability or point of weakness