Coin bite Trick
The magician borrows a coin from the spectator and is seen to take a bite out of the coin.
Take a quarter and file one side of it down so it looks like someone has bitten a chunk of it off.
Approach a spectator and ask them to borrow a quarter.
You have already the gimmicked quarter between your thumb and forefinger of your right hand.
take the quarter from the spectator and quietly move your finger and thumb and switch the coins.
Their coin is now slid to the back of your finger.
Pretend to be biting and tearing of a section of what is now your gimmicked coin and eventually tug it free of your mouth to show the spectator who should look amazed.
Click the link to view a great version of this coin!!!"