Re post # 22197: When a quarterback takes a snap under center, to avoid fumbled snaps, he is coached to have the top of his top hand make slight contact with the center's cock and balls so he will know where exactly to snap the ball. The coaches usually joke "now no gay stuff, but you have to make that contact to avoid fumbles!"
Re post # 22216: Looks like a visual smack talking of their opponents! Does the pointing finger symbolize a hard cock and the circle their opponents' assholes?