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A Cesium Shake is normally a mix of prescription drugs and a fruit-based drink (such as cider). It is thought of as the nicest tasting beverage in the illegal industry, and is commonly used for beginners in drugs or alcohol.
"I would never do drugs!!!"
"But you're drinking a Cesium Shake, Billy... Think of all that paracetamol..."
by The Big Bastardly Boss June 28, 2018
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