I knew a woman whose youngest son's (about 3 years old)greatest love was toy vehicles..(Tonka and it's clones)..but whose language skills were lagging...One day, as they drove down the street, the lad spotted a LARGE version of one of his favorite toys next to them. Leaning out the window, he pointed and screamed, "Frrruuk, Mommy, frrrrrruuuck!"....she said the driver of the 'frrruck' was highly amused.....