When you find the file on OK.ru, scrub to these timestamps for the best moments:
Alternatively, maybe the user is referring to a hacking or phishing attempt against ok.ru, using the "down periscope" as a code or signal. Or perhaps it's a metaphor for reducing visibility or presence on the platform. Another angle could be technical issues on ok.ru, where the platform is performing maintenance or reducing services, hence "down periscope". down periscope ok.ru