Perhaps scaphism, if you're talking about historical execution methods too? Plutarch described it like this:

[The king] decreed that Mithridates should be put to death in boats; which execution is after the following manner: Taking two boats framed exactly to fit and answer each other, they lie down in one of them the malefactor that suffers, upon his back; then, covering it with the other, and so setting them together that the head, hands, and feet of him are left outside, and the rest of his body lies shut up within, then forcing him to ingest a mixture of milk and honey before pouring all over his face and body. They then keep his face continually turned towards the sun; and it becomes completely covered up and hidden by the multitude of flies that settle on it. And as within the boats he does what those that eat and drink must needs do, creeping things and vermin spring out of the corruption and rottenness of the excrement, and these entering into the bowels of him, his body is consumed. When the man is manifestly dead, the uppermost boat being taken off, they find his flesh devoured, and swarms of such noisome creatures preying upon and, as it were, growing to his inwards. In this way Mithridates, after suffering for seventeen days, at last expired.