USB type C supports up to 20V DC for power delivery. It certainly can't "easily" kill. Assuming an unusually low 300ohm internal resistance, and electrodes pier

USB type C supports up to 20V DC for power delivery. It certainly can't "easily" kill. Assuming an unusually low 300ohm internal resistance, and electrodes piercing the skin and positioned such that current flows through the heart, that's still only 67mA. That's potentially lethal with AC, but well below any published threshold I can find for DC. Despite rumors of deaths from 9V DC with electrodes piercing the skin I'm unable to find any officially documented deaths from such low DC voltages.