How is pronounced : Wagon or Vagon?

Ignore this video as it pertains to learning English It's not helpful.

Also we wouldn't use the word wagon for the thing she's referring to.

He was just trolling her with the wrong pronunciation, I'm pretty sure.

Also the guy isn't a native English speaker, I'm pretty sure. He pronounces "with" with a d sound which is typical of non-natives

It's a normal "w" sound, live "weave".

In deutsch its vagon, in english its wagon (Pronunciation)

In this video, the person on camera is a German speaker and the person behind the camera is a native English speaker. First, I can't tell the difference between her 'thinking' and his 'thinking.' Second, I can't tell the difference between her 'wagon' and his 'wagon,' but then the native speaker says, 'it's wagon with a V.' Is he being ironic for the sake of a joke, or does he say 'weave'? If so, why?