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1.
A sneaky espresso is when a barista or coffee maker puts poo, either human or animal, into a rude customer's coffee or hot beverage. Those well trained in executing the sneaky espresso can do so without the customer ever realising they are drinking shit.
"Man, how rude was that customer!"

"Don't worry, I took his latte out the back and gave him the old sneaky espresso!"
by ChinChinMan November 14, 2011