My little ones have such great hearing that we dare not say some words out loud if we want any peace and quiet. With Skeeter and Ivan the word "outside" sets them off. With Adie it's "Ball" or "play" Cassie on the other hand doesn't get excited about anything. It is beneath her to show such emotion. LOL However any prase that starts with "Do you want" will perk her ears up pretty far.