The act of spotting a fine-ass'd chick (optional guy if ur a homo) who is preferably wearing a skirt and sneaking up behind them, taking a huge ass wind up, and shoving your fist up their anus as far as it will possibly go. If you make it to the mid forearm, you have achieved a Falcon Punch. Oh yea, dont forget to scream FALCON PUNCH!
Woman "Wah?" (as she looks around)
Man "FALCON PUNCH!"
Woman "OHHHH!! Farther!!"
Man "I knew you'd like it."