When Hercules fist enters Philoctetes' home, he bumps his head on the mast of the fabled Argo, the magical ship that took Jason and the Argonauts on a quest to find the Golden Fleece.
Hercules bumping his head on the mast is a direct reference to Jason of the Argonauts. Years after completing his quest, an older Jason slept aboard his beloved Argo, which had fallen into disrepair. After losing favor with the gods, Jason was killed when the ship's mast fell and hit his head.
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