How to cow tip: Sneak up, at night, on a sleeping cow. (They sleep standing up, for you city-folk.) You must execute the next step quietly and quickly, or else the cow will wake up. It works best if two or three people come up along side the cow and just push. Evidently, they topple right over. I've never done it myself, but I knew a man from Oklahoma once who did it as a drunk (see beer) teenager. What else do you think kids have to do in Oklahoma?