A Taser, with cartridge removed, making an [[electric arc between its two electrodes]]

The taser intrusion recovery system
The taser intrusion recovery system
Electric gun (TASER®) injuries
Acute effects of TASER X26 discharges in a swine model.
TASER X26 discharges in swine produce potentially fatal ventricular arrhythmias.
Effects of the Taser in fatalities involving police confrontation.
Taser-induced rapid ventricular myocardial capture demonstrated by pacemaker intracardiac electrograms
Cardiac Monitoring of Human Subjects Exposed to the Taser®
Introduction of the Taser into British Policing. Implications for UK Emergency Departments: An Overview of Electronic Weaponry
Twelve-lead electrocardiogram monitoring of subjects before and after voluntary exposure to the Taser X26