For example, if Fred, Daphne and Wilma are playing the Worde Association Game, then the following example wouldst be illegal;
Fred wrote:Sausage
Daphne wrote:Pig
Fred has violated the rule, and shall have to be flogged! Well, maybe not flogged, but thou gets the idea.Fred wrote:Glutton!
The following exchange, however, wouldst be acceptable;
Fred wrote:Shield
Daphne wrote:Sword
Wilma wrote:Knight!
Fred wrote:Aha! Baron!