Binkie-go-round

My sister in law had a baby about 3 months ago... when the baby was born, both of the youngest kids decided that they needed a binkie again even though they had gotten rid of them almost a year ago now... Yesterday was fun to watch how they "rotate".  Baby will have a blue binkie... almost 2 year old will walk up with a green one and switch it with the blue one... 3 year old will see 2 year old walk by with the blue one and grab it before giving over the yellow one... then the next time you see them all... baby will have the yellow, 2 year old will have the blue and 3 year old will have the green... etc...  It was really funny to watch.