Not sure a 3 way sexfight would work. At least any different than a 3 way fight. Basically you would end up 2 ganging up on 1, then one of the two ambushes the other, then they gang up on that one for a while. Typically it ends up the two weaker ones would gang up on the stronger. Once the strongest is finished off, the remaining two finish it. Only other way would be like an oral circle???