For those of us who have toddlers or have experienced the toddler phase as parents, we know this feeling all too well.
One moment, a toddler will be playing with a toy happily. The next, he or she will tire of it, move on, and find a new activity. All is well in the toddler's world; they had fun with a toy and are now enjoying something else. However, once someone else comes along and plays with the aforementioned toy, things don't go so well.
All of a sudden, that child will want the original toy back.