Four women and one man enter.  Whoever leaves? It ain’t the man.

UPDATE:  Sorry to be cryptic.  Ol’ Robbo is just finding cat fights rayther hard to deal with.  If they were teenaged boys, I could simply whap them across the back of the head or kick them in the pants and tell them to knock it off.  Girls, though?  Better if I just feign deafness and walk quietly to the nearest exit.