A U.N. study released Monday reported that U.S. children rank first in the world in hand-mouth coordination. 'American children can move items from their hands into their mouths faster, better and more efficiently than anyone,' the report read. 'The children of no other nation can claim such hand-mouth prowess.' The four-year study of the physical abilities of children in 157 countries also found that U.S. children finish an Oscar Mayer Lunchables Fun Pack in just under two minutes, nearly twice as fast as the world average. 