A sport with the same rules as to two-hand touch football, except players use their own nut sacks to tackle opposing players, rather than using their hands. In order for a "sackle" to count, the "sackler" must touch the opposing player with full nut sack. This is most commonly done by jumping and wrapping one's legs around the opponent in order to pull the individual closer to one's sack.
"Hey, for Brosgiving we're all playing sackle football on the green!" - Chad