If you are just that curious, than how about lookin it up on google? Why would you even want to fist pound yourself? Your 13. You shouldn't even be thinking about sexual things. You should be enjoying your life and not even worry about it. Stick to regular masterbation.
The correct definition of a "fist pound" is when you close your hand to make a fist, and you bump with somoene elses hand, like a handshake.
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