Justin Willman has a show on Netflix called "Magic For Humans" where he does street magic to orchestrating elaborate tricks. This is one of those elaborate tricks.

Willman gathers some people together and tells him his plan. He wants to make someone believe they're invisible. And it works.

The audience plays along perfectly to help convince these two guys that they're invisible. The fact that they had two completely different reactions just makes it that much better.

The first guy, while was freaked out at first, took it upon himself to play his own "tricks" on people. That's where the audience played it perfectly.

The second guy just about had a mental breakdown when Willman "left" because he thought he was stuck forever.