Slappers only! is a multiplayer weapon set without any weapons or ammo, meaning that the players can only fight unarmed. While one of the least played sets, it can be fun in the License to Kill scenario, as it takes a good amount of skill for a player to hit their target without being hit themselves.
If another player is Jaws, select Oddjob. For Jaws, it will be near impossible to get a hit on Oddjob using his slapper. Jaws has to literally bend down to slap Oddjob, due to the large height difference.
There is also a website, SlappersOnly , that is dedicated to gaming in general and carrying on the slappers only tradition.