Re: Phlogiston
+Voyna i Mor
I'd go further in poking fun at it.
In the later stages, phlogiston had both positive and negative mass, for reasons, in order to account for observed behaviour (burn this and it gets heavier but burn that and it gets lighter).
It seems reasonable that a new boson, named phlogiston (it ends in "on" so it;'s a boson) can be responsible for both dark matter puling the universe together and dark energy pulling the universe apart.
Simples.