The swimmer said he didn't need the mittens and Billy gave him a deadpan stare. Like watching a man actively on fire say he didn't need to be put out. The wizard pushed them back toward the guy.
“They're magic, just humor me before I have to watch a kid freeze to death.” he said.
Rowling circled tight overhead as he watched. It was an annoyance to the bird that their night of ritual work was inturrupted... but the young man claimed to be more than human. At least there was a potential for new components by the oil's reckoning.