I will stare at my humans while they eat.  I will stand right behind them in the kitchen while they "cook," just waiting for something to drop.  Rarely do I actually enjoy what they drop though, so I don't really know what drives me to do this.  I think it's the hope that they might happen to be making dog treats for dinner.  Anyways, the other night my human dropped this slice of "zucchini."  WTF?  I carried it into the living room to examine it a little more closely.  I licked it.  I smelled it.  Nope.  I determined it was not edible.