Canterbury police posted the video on Thursday afternoon, asking members of the public to help them identify the gunman.
However people commenting on the post were more interested in talking about how relaxed the unidentified souvlaki-maker was through the whole ordeal.
"This has got to be the most chill chip [shop] operator ever," one person commented.
"Imma let you finish robbing me in 2 secs I just gotta get this order out #customerserviceonpoint [sic]," wrote another.
"Still salts the order and all! #ThugLife."
Nearly 100 comments had been posted late on Thursday night, most of them making light of the situation, which ended without violence or robbery.
"Hunger stops at nothing," read one comment.
Locals said the souvlakis at the unnamed shop were "the best" and, as more than one person pointed out, the service seems pretty good too.
If you know the offender, or if you have information that might help identify him, please contact Christchurch Police Station on 03 363 7400.
Information can also be provided anonymously via Crimestoppers on 0800 555 111.
Police asked people quote file number 160529/4294.