The Taser Photoshoot is a reactionary photo series by US photographer Patrick Hall. The photographer somehow convinced a group of 100 people to take on a stun gun while he filmed their reactions in slow-motion. In a behind-the-scenes video Hall explains his endeavour to get real expression in portrait photography, and how the series works because it’s literally impossible to hide your reaction to being shocked by a 300,000 volt stun gun.

Check out the video above.

[Via.]