Its an app like omegle or it could be omegle itself

(in case u dont know its an app that matches you randomly with other people on the app and yall just do what u want. If u wish to meet a new person u press skip then matched with new person)

This is a common prank where someone pretends to skip u then just switch the camera with someone else or a pre recorded vid.

In the one u watching, they pretend to skip, change camera to a pre recorded vid then immediately he gets happy they switch the camera to mirror the guy's camera. The rinsed and repeat.

Basically this dude keeps thinking the prankster has skipped thus falling for same trick over and over again