I don't get how it relates to the second line, or "beheading" at all.
Blah blah blah blah blah blah blah blah blah small.
I wouldn't have figured out the riddle in a million year,
I can't answer some of these riddles a lack of intelligence I fear.
But as far as the beheading goes,
In a weird way it makes sense to me bro.
Remember the old non-safety wood match?
It could be lit without a scratch patch.
Just give it a flick with a finger nail.
Kind of like ripping off it's head, but there's no need to pale.
As far as the green goes I'm trying to remember,
When it first ignites isn't there a green-blue to this ember?