Go ahead and take that bet. We’re going to show you how to win at heads or tails every time.
Step 1: Cop a feel Flip the coin into the air. As you catch it, slide your thumb under your fingers and use it to feel the surface of the coin. If it’s smooth, you know it’s heads; the tails side feels textured and rough.
TIP: Cop a feel If you were forced to call a side beforehand and the coin has landed the other way, nudge it over with your thumb.
Step 2: Practice Practice flipping and feeling the coin with your thumb until you can do it quickly and stealthily—you don’t want your opponent to know you’re cheating!
Step 3: Try another trick Try another trick. Holding the coin near the end of your index and middle fingers, flick your wrist up and lift your index finger, spinning the coin like a Frisbee. If you do this correctly, the coin will never flip over.
Step 4: Exploit your opponent’s stupidity If your opponent is tipsy (or simply not too bright), say quickly, 'Heads I win, tails you lose.' Chances are he won’t catch on.
TIP: Practice For pretty good odds, suggest to your opponent that you spin the coin on its edge instead of tossing it—and take tails. A spinning coin lands on tails about 80% of the time.
Step 5: Buy a trick coin If you can’t master either of these techniques, buy a trick coin with either heads or tails on both sides.
FACT: Practice A coin lands the same way it started about 51% of the time.