Notes

Wizarding Idiom

1. "Galloping gargoyles" or "Gulping gargoyles" also known as "Gallopin' Gorgons" - the former used by Cornelius Fudge and Professor Tofty when they express outraged shock and the latter used by Rubeus Hagrid in 1991 when he forgot to tell Albus Dumbledore that he had given Harry Potter his Hogwarts acceptance letter. A play on "gallopin' gals".
2. "I wouldn't come near you with a ten-foot broomstick" - synonymous with "ten-foot pole" in the Muggle world. Used in reference to someone or something that is considered unapproachable or offensive.
3. "Like some common goblin" - a phrase often used in the Muggle world with a pejorative phrase such as "gypsy" or "whore" replacing the magical creature goblin. Such an idiom is used to mean the person being discussed is acting in a common, disagreeable, "low class" manner.
4."Ten a Knut" - synonymous with "ten a penny", meaning to be so common as to be practically worthless.[2]
5. "Wasn't room to swing a Kneazle"- play on "No room to swing a cat", meaning it is very cramped. Used by Rubeus Hagrid to describe the area where the giants lived (Note that in the original saying, a "cat" was a kind of whip, which is why one would be swung)
6. "Losing a Knut and finding a Galleon" - synonymous with the Muggle idiom "Losing a sixpence and finding a shilling" or other Muggle money. The phrase means that by losing something of relatively little importance, one gains something superior unexpectedly.
7. Like bowtruckles on doxy eggs" - play on the Muggle phrase "like white on rice," which means to stick to someone or something very closely.