In his entire life Bill had never had to try so hard not to laugh. Because Bill liked kids, he understood kids and they hated that when they weren't trying to get a laugh. There was something so serious, so determined about that little Klaus face that he couldn't laugh at him, it would have been cruel. Sure maybe he ruptured a spleen, broke a little something like a rib but it was for The Greater Good.
He ran his fingers through his hair, grinning down at him. "Hello, mate," Bill greeted again. "I know this is your house, you're allowed," he agreed. "I've just come to make sure you're doing alright. Maybe make some pancakes?" Because adult Klaus liked pancakes he could hope a little one might too.
That'd keep them from going hungry.
What was Bill going to do, introduce himself as his boyfriend? Awkward. No. That wouldn't do.