Kids wander around all the time. It doesn't mean they always talk to strangers.

[In a round about way, he means it as a spoken assessment of this kid's personality. He won't say a lot about what he's thinking, sure, but there is that.]

And sure. There are some. Not me, oh no, I wouldn't bother with something like that.

[Not that Alvin is expecting him to ask if he can do it, but he doesn't want to have to explain all of it, and hopes that's just enough to put the kid off that line of thought.]