A game of how fastness and good timingness.
The idea is that if you're really pissed at someone, or whatever, or you just want to have fun you challenge them to a duel, and slap them.
How you play is you both decide on a time, in UT (GMT) and whoever manages to post BAM! or BANG! or ZAP! or whatever, as close to that time as possible while not going before, wins, and if you post bang more then once you loose.
Example:
Player A: I challenge you to a duel *slap*
Player B: Fine! 1630 UT?
Player A: OK
Possible happenings:
16:29- Player A: Bang!
16:31- Player B: Bang!
Player B wins
16:30- Player A: Bang!
16:31- Player B: Bang!
Player A wins
16:31- Player A: Bang!
16:31- Player B: Bang!
Player A wins (posted before)
16:29- Player B: Bang!
16:30- Player B: Bang!
16:31- Player A: Bang!
Player A wins