Sounding it out

Last Sunday, TJ was amusing himself by filling out the communication card in the bulletin. He was filling it out as though he was the adult. He decided to use his given name, rather than his nickname. But his name isn't exactly easy. He carefully wrote 'T-h-e-o' and then paused to think the rest over. He glanced at me, gave me a proud smile and finished with 'D-O-O-R'. I couldn't help it. I started snickering. Theodoor? He looked miffed and said, "What? That's how you spell 'door'!" I have had a difficult time explaining to him since then that names aren't always spelled the way they sound. And besides, he isn't a type of door.