@catsalad sorry to mansplain here... But the alt text is incorrect. The device is not a "power tester" but a power supply for up to 30V. And in addition the girls are hiding behind the sand bags because the electrolyte capacitor connected in reverse polarity will explode when the output of the power supply will be turned on (even at low voltage because of the reverse polarity).

So you are correct to be very afraid of electricity in this case 😉