It's impossible!

Do was singing and shaking his head back and forth.
"What are you doing?" I asked him
"I can't sing into my ear," he said seriously.
"Why not?" I asked.
"Because my mouth is here," he explained, pointing, "and my ear is over here."
He looked sad, so I suggested, "Do you want to sing into my ear?"
"So loud?" he asked, surprised.
"No, not so loud," I told him. "Softly."
He pondered this for a moment, and apparently decided that if he couldn't sing into my ear so loud, it wasn't worth it. Then he said mournfully, "One time my ear used to be over here," pointing to a space next to his mouth, "and then I could sing into it!"