By this point, it finally occurred to Eoin that he was basically talking to someone while in bed, and even if that didn't matter, he suddenly felt keenly aware of it and felt like, even though he was just talking to some street rat "Muggle" (much like himself) he was obliged to at least not seem quite as relaxed as he probably looked. Or as much as one could look when they looked as though they were in a state of permanent ill health. While the kid spoke, Eoin repositioned himself so that he was cross-legged and facing his opponent.
"Oh don't try that shit on me, lad," he said when the kid tried to look tough, and in saying that probably gave a bit of a hint that he wasn't (mentally) as young as he looked. Particularly since he seemed about a half second away from saying 'Or I will give you such a thrashing.' Sometimes Eoin couldn't help acting his age, particularly when someone so young was being rude to him.
He scratched his head for a moment before he continued conversationally, "Too daunted by my stupidity to realize you were talking to a wizard? That I'd chosen to hide in a place that in so far as I know is fully Muggle except apparently for you - am I wrong? Maybe you could have used your reasoning to say 'Hm. This feller was dead when I last saw him and now he's alive. Can a Muggle do that?' No, unless he's a Christian superhero, yeah?"
All this time, Eoin hadn't bothered taking into account that the kid had seemed pretty embarrassed to forget about Disillusionment charms. But he continued anyway, undaunted. "Well there you've hit the nail on the head, lad. Spells and potions - I mean, I'd go for Draught of Living Death myself if I could afford it. Or heck, just make it on my own." If he had a place to make it or the materials (or the skill, frankly), but he figured he'd leave that vague. No need in leading with his answers.
"And what with all the what?" he asked, almost as an afterthought and not really expecting an answer. He'd antagonized the kid enough, even he had to admit that. He smiled a little and said, "Sorry, lad. I don't mean to start nothing, just don't take kindly to being shouted at soon as I wake up." To the question of why he'd asked if the kid had a wand, he said, "But it doesn't matter much, to tell you the truth. Never know who's fagging for old Tommy boy. Gets you in some way, he does, even if you cough up for a new one. Unless you're a really unfortunate Squib."