"Our feet are growing!"
Sure enough, Chris and Dave's feet were getting bigger and bigger and bigger and bigger and bigger and bigger and bigger and bigger and bigger!
Then, suddenly, their bodies increased in size, splitting their clothing apart. Also, thick fur in the colours of their hair grew on their bodies, and on the tops of their enlarged feet.
Dave was now bigger and taller, and his coat and shirt were now reduced to that of a waistcoat, and his pants were reduced to shorts.
Chris was the same, but without the coat, and covered in a darker fur.
"Holy cow!" Chris said. "We've turned into Bigfoot creatures!"
Dave said, "Awesome!!! We likey our new forms! We wanna be Bigfoots forever!"
With that, the 2 Bigfoot skateboarders collected their skateboards, and sprinted away, cheering and whooping.
Mr Todd grinned. "I guess I can shapeshift people!"