I work in a microbiology lab and we had a 'technical error' while making agar plates which led to me getting covered. Not a good day, as you can see I was happy to wait while a colleague went to get his camera.
Hmm thats a funny coincidence, my friends and I had recently got those exact same vendetta (or perhaps EFG?!) masks for halloween. A group of people in those being utterly silent turned out to be pretty creepy.