The kid stays in the picture.

Lightweight digital tools make all sorts of things possible.
Coke filmed cinema patrons in the lobby of a bug-hut in Denmark slurping their Cokes and generally goofing around. Little did they know they were being taped. By the time they are seated their faces have been edited into bogus movie trailers with the message 'The movie is better without you in it.' 
It's a nice idea. maybe a little tortured - is slurping really so much of a problem in Scandie movie houses (every culture is different) - or maybe the idea was to get patrons to buy more Coke so they would slurp more (hey, I just judged the CAANZ media awards, agencies and client will do some weird stuff and boast about it in award entries - I would reveal all but have signed a non-disclosure in blood). 
The clip is obviously for award jury consumption - I doubt the stunt was used in any widespread way - and the kids featured look remarkably like the kids who might work in an ad agency…it's probably the environmental/digital verison of a scam ad - an idea created to enter award shows, rather than an actual sales/ROI ad. Nicely played though.
It does show the opportunity for creativity using ubiquitous, low cost tools in a fast, engaging way. Something to think about.