I dont know why he does it. Or if he even does it on purpose. But, almost everyday my son "Misplaces" his binki. Which turns into the END OF THE WORLD! I have at least 4 I know of in this house. Yet at most times I am lucky if I can tell you where even 2 is. When I give in and give him his back up binki he shows up with 2 in his hands. After him yelling at me searching for over an hour. I have been doing a good job of weening him off he only has it half the day now and never when we are out. But I know he still really depends on it for comfort so I do not want to push the topic. But, Ahh I dream of the non-binki days.