It's possible to dig pits in magma with a pick axe, resulting in both a stream of magma and a pit occupying the same place. Leads to further silliness, as the pit can still be covered and concealed by using a blanket.
I will always test my changes. I will always test my changes. I will always test my changes. I will always test my changes. I will always test my changes. I will always test my changes. I will always test my changes. I will always test my changes. I will always test my changes. I will always test my changes. Tested and thus confirmed as fixed.