I’m gonna agree with others on this one, sounds like some kid trying for attention/covering something up. That’s not really a graze mark, and if it was it would’ve left something on his knuckles or gone right through them. If it was moving at an angle it would’ve hit either his knuckles or more of his arm, right? And it couldn’t have been slowed or deflected because ‘it left a sizable crater’. Besides, as was mentioned meteors don’t hit earth hot, they’re freezing cold, it wouldn’t have burned him at all.