أَنَا الرَّجُلُ الضَّرْبُ الَّذِي تَعْرِفُونَهُ / خَشَاشٌ كَرَأْسِ الْحَيَّةِ الْمُتَوَقِّدِ
I am the lean, energetic man you know, alert and quick as the head of a darting serpent.
In al-rajul al-ḍarb, ḍarb describes a light or lean-bodied man; it is not simply a reference to striking with a sword. Khashāsh suggests quick intelligence and readiness.
The comparison ka-raʾs al-ḥayyah focuses on the swift, alert movement of a snake’s head—not on a moral characterization of snakes.