"Probably about it I think."

So he says bye to his mom and that he'll probably call her back later and she says bye and then she's gone. "Am I still on house arrest or do we think I'd be safe to go somewhere and test if the vampire invitation rule applies to me?"

"I don't actually know, you'd be a better judge of that than any of us, but to be honest I'm not sure I want to risk any outdoor tests at all while it's sunny."

"Well, the sun's probably lower now, it being like five or something, but yeah, I should probably cover up if I go outside. Since it's presumably exposure to sun – it feels like that and the shade seemed to help – and not just 'you happen to not be under a roof, wow, enjoy burning' or something."

"Well I still don't really see a good reason not to wait until full sundown."

"Okay, yeah, I was just going through the list. Uh, we haven't tested holy water yet, not sure that we got a proper confirmation on running water, various other holy symbols, we're planning on testing echolocation later… Anything else to do with sway?"

"Well running water maybe try a sink? If crosses don't work I don't expect holy water or other holy symbols to, echolocation's probably also best at night, and I'm not sure about Sway..."

"I mean, a shower didn't do it so I was thinking something larger like a river, but I'll try the sink idea anyway."

So he does!

Nothing bad happens!

"Yeah river next I guess, at night, too. Uh, then I think we've actually run out of tests we can meaningfully perform with the contents of a middle class American teenager's house?"

"Yeah," he agrees. "Unless we notice anything else about my vampirism in the next few hours. Which will hopefully be a positive, not a negative, if we do."

"Yeah.

...so what now."

"So now I guess we maybe have food, check if dimmer sunlight feels less painful to me, and then do stuff until sunset?"

"Sounds reasonable," he sighs.