I was in a lab with a researcher who handed me a VR set. He instructed me to go outside unto the street, and with the headset on I would experience a sort of themed/skinned reality in realtime, but with a slight delay. This was originally a technological constraint (lag), but they wanted to investigate the intentional binding phenomena. I put on the headset and went outside, and was quite amazed at how real everything seemed. The streets were empty and I worried about bumping into someone inside reality, so I was going quite slow, experiencing some lag between my movements and what happened in VR. After some time of this I grew anxious (like when you walk with your eyes closed) so I stripped off the VR headset and saw that it was simply transparent, like a diving mask. I felt duped but then I understood the study was about inducing the sensation of lag in reality.