Word Association game

Many of us may have played this game as kids. The rules are very simple:

• You say the word:

do while(true) { 

• I say the first association to your word that came to my mind
• You give an association to my association:

} 

For example, Dog → Cat → Pet → Toy → Baby → Girl → Wedding → Funeral. In the game, people reveal their life experience and way of thinking to each other; maybe that's why we could play it for hours as kids. Different people have different associations with the same word, and associations often head towards a completely unexpected direction. Psychologists have been studying associative series for more than a century, hoping to find in them the key to the mysteries of consciousness and the subconscious. Can you code a game AI to play like that? Perhaps you think you will need a manually composed database of associations. But what if you want your AI to have several personalities? Thanks to machine learning, this is definitely possible and you even don't need to...