Thumb Sucker #2???

Could it be that Sam has found his thumb?

Almost since Sam was born he has sucked on his hands and fingers. He has never really liked a pacifier. He has been especially fond of having 2 or 3 fingers in his mouth. However, the past few days I have found him sucking on his actual thumb several times. I think it is kind of funny that Nicholas sucked his thumb, but neither of the girls did. If this becomes Sam's knew "habit" it will be both of our boys that sucked their thumb.