Unique

I was pointing out at school today how we all have unique qualities...in fact on our "team" this year are two sets of twins and two of four quadruplets...I was noticing one of the quadruplets and talking to the class about how unique that was....one little boy (obviously not going to be my vocabulary king) said, "that's cool I'm double jointed too!"...this of course led to a neccessary discussion of what quadruplets were!