Chad instantly froze in place. Then he heard a voice.
"Sorry dude." David said as he walked out from the shadows. "This is the only way I can afford that fishing boat I always wanted. Best of all, I don't have to pay for storage when I'm not using you."
David turned the key and Chad began to grow. It was slow enough that David could easily get out of the way. Chad the boat filled the entire fieldhouse.
"Beautiful." David said, "It's the boat of my dreams."
Then he got in and took the key out of the ignition and Chad the boat shrunk until he was toy sized.
As David cleaned up and prepared to leave, he said, "That isn't even all the key can do."