What is the definition of Classroom Healing Cream?

"Classroom healing cream"? Imagine this - it's like a magic potion designed to soothe your aching eyes, calm your frayed nerves, and somehow, miraculously make your students' test scores soar. It's the ultimate remedy for the modern-day classroom drama queen, except instead of a potion, it's a generic ointment that's more likely to cause a mild allergic reaction or just make your students wonder why they're being lectured so much.

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Example sentence: "After the bell rang for the third time today, Mr. Grumpy decided to whip out the 'Classroom Healing Cream' - and his students just started complaining about how it made their test anxiety level skyrocket instead of drop."