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Where there’s a will there’s a way(r/pics)
At college football games, I used to sneak in liquor in fake binoculars (available here). It has two compartments so we could add vodka to Sprite and Jack to Coke.
My wife saw a guy at a Purdue game with a mylar bag from the inside of a box of Franzia wine duct taped to his belly. He ran the spigot out of his fly.