As a conceptual artist ( a good crazy artist ) I sometimes feign having a cell phone conversation in the midst of other loud people actually having a cell phone conversation.

Things like: "Never mind the quarantine, you get on that plane and get back here immediately. There is probably no such thing as Marsburg virus, what is it, from Mars?"

"Thats nonsense, a christian conservative would NEVER do such a thing!"

"No the doctor said they never saw anything like it. MM Hmm, Well first thing was all the blue colored puss..."

>>>>>>>>>>>>>>>>>>>>>

Social conceptual artists have been known to frequent a Starbucks with 8 different people doing normal things like a couple aruing over smoking, a guy walking through quickly with a small boombox playing {this is ground control to Major Tom], a woman who exclaims loudly I Forgot My Money and hurries out...

But they do this in an identical sequence in multiple time loops that take about 12 minutes each.
For people who are there for 20 minutes or more, they begin to get rather freaked out and start calling a friend to tell them something wierd is happening,