Wrap up your knuckles in tape, write FIST on the tape, take a picture of it, then add it to the RogueProjectLeader group on Flickr (I used masking tape for the picture on this site, btw).
Bonus points if you also submit a photo of yourself wearing a fake mustache. Double bonus points if you're wearing a fake mustache and you're female. Drop a comment here when you've done it. Have fun!